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Finding the Fourth Proportional to 8,745.71, 12,073.13 and 5,159.45

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Solution

The fourth proportional to 8,745.71, 12,073.13 and 5,159.45 is: 7,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.71 : 12,073.13 = 5,159.45 : x
  2. Step 2: Convert to fraction form
    8,745.71/12,073.13 = 5,159.45/x
  3. Step 3: Cross multiply
    8,745.71x = 12,073.13 × 5,159.45
  4. Step 4: Simplify right side
    8,745.71x = 62,290,714.96
  5. Step 5: Solve for x
    x = 62,290,714.96/8,745.71
  6. Step 6: Final answer
    x = 7,122.43

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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.