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Finding the Fourth Proportional to 8,714.15, 12,024.13 and 5,129.29

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Solution

The fourth proportional to 8,714.15, 12,024.13 and 5,129.29 is: 7,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,714.15 : 12,024.13 = 5,129.29 : x
  2. Step 2: Convert to fraction form
    8,714.15/12,024.13 = 5,129.29/x
  3. Step 3: Cross multiply
    8,714.15x = 12,024.13 × 5,129.29
  4. Step 4: Simplify right side
    8,714.15x = 61,675,249.77
  5. Step 5: Solve for x
    x = 61,675,249.77/8,714.15
  6. Step 6: Final answer
    x = 7,077.60

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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.