Home / 8,543.16-12,815.19-2,699.31

Finding the Fourth Proportional to 8,543.16, 12,815.19 and 2,699.31

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Solution

The fourth proportional to 8,543.16, 12,815.19 and 2,699.31 is: 4,049.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.16 : 12,815.19 = 2,699.31 : x
  2. Step 2: Convert to fraction form
    8,543.16/12,815.19 = 2,699.31/x
  3. Step 3: Cross multiply
    8,543.16x = 12,815.19 × 2,699.31
  4. Step 4: Simplify right side
    8,543.16x = 34,592,170.52
  5. Step 5: Solve for x
    x = 34,592,170.52/8,543.16
  6. Step 6: Final answer
    x = 4,049.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.