Home / 8,429.18-12,642.65-2,505.96

Finding the Fourth Proportional to 8,429.18, 12,642.65 and 2,505.96

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Solution

The fourth proportional to 8,429.18, 12,642.65 and 2,505.96 is: 3,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.18 : 12,642.65 = 2,505.96 : x
  2. Step 2: Convert to fraction form
    8,429.18/12,642.65 = 2,505.96/x
  3. Step 3: Cross multiply
    8,429.18x = 12,642.65 × 2,505.96
  4. Step 4: Simplify right side
    8,429.18x = 31,681,981.46
  5. Step 5: Solve for x
    x = 31,681,981.46/8,429.18
  6. Step 6: Final answer
    x = 3,758.61

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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.