Home / 8,091.44-11,154.76-7,980.48

Finding the Fourth Proportional to 8,091.44, 11,154.76 and 7,980.48

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Solution

The fourth proportional to 8,091.44, 11,154.76 and 7,980.48 is: 11,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.44 : 11,154.76 = 7,980.48 : x
  2. Step 2: Convert to fraction form
    8,091.44/11,154.76 = 7,980.48/x
  3. Step 3: Cross multiply
    8,091.44x = 11,154.76 × 7,980.48
  4. Step 4: Simplify right side
    8,091.44x = 89,020,339.08
  5. Step 5: Solve for x
    x = 89,020,339.08/8,091.44
  6. Step 6: Final answer
    x = 11,001.79

Related Problems

Find fourth proportional to 4,045.72, 5,577.38 and 3,990.24
Half scale
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Double scale
Find fourth proportional to 8,092.44, 11,156.14 and 7,981.48
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.