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Finding the Fourth Proportional to 8,663.32, 12,932.31 and 7,612.37

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Solution

The fourth proportional to 8,663.32, 12,932.31 and 7,612.37 is: 11,363.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.32 : 12,932.31 = 7,612.37 : x
  2. Step 2: Convert to fraction form
    8,663.32/12,932.31 = 7,612.37/x
  3. Step 3: Cross multiply
    8,663.32x = 12,932.31 × 7,612.37
  4. Step 4: Simplify right side
    8,663.32x = 98,445,480.05
  5. Step 5: Solve for x
    x = 98,445,480.05/8,663.32
  6. Step 6: Final answer
    x = 11,363.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.