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Finding the Fourth Proportional to 9,155.43, 12,612.92 and 7,551.63

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Solution

The fourth proportional to 9,155.43, 12,612.92 and 7,551.63 is: 10,403.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,155.43 : 12,612.92 = 7,551.63 : x
  2. Step 2: Convert to fraction form
    9,155.43/12,612.92 = 7,551.63/x
  3. Step 3: Cross multiply
    9,155.43x = 12,612.92 × 7,551.63
  4. Step 4: Simplify right side
    9,155.43x = 95,248,067.30
  5. Step 5: Solve for x
    x = 95,248,067.30/9,155.43
  6. Step 6: Final answer
    x = 10,403.45

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Half scale
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Double scale
Find fourth proportional to 9,156.43, 12,614.29 and 7,552.63
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.