Home / 6,612.48-9,121.12-5,726.76

Finding the Fourth Proportional to 6,612.48, 9,121.12 and 5,726.76

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Solution

The fourth proportional to 6,612.48, 9,121.12 and 5,726.76 is: 7,899.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.48 : 9,121.12 = 5,726.76 : x
  2. Step 2: Convert to fraction form
    6,612.48/9,121.12 = 5,726.76/x
  3. Step 3: Cross multiply
    6,612.48x = 9,121.12 × 5,726.76
  4. Step 4: Simplify right side
    6,612.48x = 52,234,465.17
  5. Step 5: Solve for x
    x = 52,234,465.17/6,612.48
  6. Step 6: Final answer
    x = 7,899.38

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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.