Home / 8,720.76-13,081.14-3,530.28

Finding the Fourth Proportional to 8,720.76, 13,081.14 and 3,530.28

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Solution

The fourth proportional to 8,720.76, 13,081.14 and 3,530.28 is: 5,295.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.76 : 13,081.14 = 3,530.28 : x
  2. Step 2: Convert to fraction form
    8,720.76/13,081.14 = 3,530.28/x
  3. Step 3: Cross multiply
    8,720.76x = 13,081.14 × 3,530.28
  4. Step 4: Simplify right side
    8,720.76x = 46,180,086.92
  5. Step 5: Solve for x
    x = 46,180,086.92/8,720.76
  6. Step 6: Final answer
    x = 5,295.42

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.