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Finding the Fourth Proportional to 6,612.76, 9,125.22 and 3,960.28

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Solution

The fourth proportional to 6,612.76, 9,125.22 and 3,960.28 is: 5,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.76 : 9,125.22 = 3,960.28 : x
  2. Step 2: Convert to fraction form
    6,612.76/9,125.22 = 3,960.28/x
  3. Step 3: Cross multiply
    6,612.76x = 9,125.22 × 3,960.28
  4. Step 4: Simplify right side
    6,612.76x = 36,138,426.26
  5. Step 5: Solve for x
    x = 36,138,426.26/6,612.76
  6. Step 6: Final answer
    x = 5,464.95

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Half scale
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Double scale
Find fourth proportional to 6,613.76, 9,126.60 and 3,961.28
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.