Home / 8,714.52-12,026.70-5,129.40

Finding the Fourth Proportional to 8,714.52, 12,026.70 and 5,129.40

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Solution

The fourth proportional to 8,714.52, 12,026.70 and 5,129.40 is: 7,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,714.52 : 12,026.70 = 5,129.40 : x
  2. Step 2: Convert to fraction form
    8,714.52/12,026.70 = 5,129.40/x
  3. Step 3: Cross multiply
    8,714.52x = 12,026.70 × 5,129.40
  4. Step 4: Simplify right side
    8,714.52x = 61,689,754.98
  5. Step 5: Solve for x
    x = 61,689,754.98/8,714.52
  6. Step 6: Final answer
    x = 7,078.96

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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.