Home / 9,478.04-13,079.40-5,229.20

Finding the Fourth Proportional to 9,478.04, 13,079.40 and 5,229.20

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Solution

The fourth proportional to 9,478.04, 13,079.40 and 5,229.20 is: 7,216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.04 : 13,079.40 = 5,229.20 : x
  2. Step 2: Convert to fraction form
    9,478.04/13,079.40 = 5,229.20/x
  3. Step 3: Cross multiply
    9,478.04x = 13,079.40 × 5,229.20
  4. Step 4: Simplify right side
    9,478.04x = 68,394,798.48
  5. Step 5: Solve for x
    x = 68,394,798.48/9,478.04
  6. Step 6: Final answer
    x = 7,216.13

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Half scale
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Double scale
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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.