Home / 9,115.03-12,577.80-5,136.76

Finding the Fourth Proportional to 9,115.03, 12,577.80 and 5,136.76

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Solution

The fourth proportional to 9,115.03, 12,577.80 and 5,136.76 is: 7,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.03 : 12,577.80 = 5,136.76 : x
  2. Step 2: Convert to fraction form
    9,115.03/12,577.80 = 5,136.76/x
  3. Step 3: Cross multiply
    9,115.03x = 12,577.80 × 5,136.76
  4. Step 4: Simplify right side
    9,115.03x = 64,609,139.93
  5. Step 5: Solve for x
    x = 64,609,139.93/9,115.03
  6. Step 6: Final answer
    x = 7,088.20

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Half scale
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Double scale
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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.