Home / 8,220.48-11,346.63-7,279.35

Finding the Fourth Proportional to 8,220.48, 11,346.63 and 7,279.35

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Solution

The fourth proportional to 8,220.48, 11,346.63 and 7,279.35 is: 10,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.48 : 11,346.63 = 7,279.35 : x
  2. Step 2: Convert to fraction form
    8,220.48/11,346.63 = 7,279.35/x
  3. Step 3: Cross multiply
    8,220.48x = 11,346.63 × 7,279.35
  4. Step 4: Simplify right side
    8,220.48x = 82,596,091.09
  5. Step 5: Solve for x
    x = 82,596,091.09/8,220.48
  6. Step 6: Final answer
    x = 10,047.60

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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.