Home / 8,459.31-12,686.18-2,912.53

Finding the Fourth Proportional to 8,459.31, 12,686.18 and 2,912.53

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Solution

The fourth proportional to 8,459.31, 12,686.18 and 2,912.53 is: 4,367.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.31 : 12,686.18 = 2,912.53 : x
  2. Step 2: Convert to fraction form
    8,459.31/12,686.18 = 2,912.53/x
  3. Step 3: Cross multiply
    8,459.31x = 12,686.18 × 2,912.53
  4. Step 4: Simplify right side
    8,459.31x = 36,948,879.84
  5. Step 5: Solve for x
    x = 36,948,879.84/8,459.31
  6. Step 6: Final answer
    x = 4,367.84

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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.