Home / 7,478.40-11,217.60-5,607.30

Finding the Fourth Proportional to 7,478.40, 11,217.60 and 5,607.30

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Solution

The fourth proportional to 7,478.40, 11,217.60 and 5,607.30 is: 8,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.40 : 11,217.60 = 5,607.30 : x
  2. Step 2: Convert to fraction form
    7,478.40/11,217.60 = 5,607.30/x
  3. Step 3: Cross multiply
    7,478.40x = 11,217.60 × 5,607.30
  4. Step 4: Simplify right side
    7,478.40x = 62,900,448.48
  5. Step 5: Solve for x
    x = 62,900,448.48/7,478.40
  6. Step 6: Final answer
    x = 8,410.95

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.