Home / 8,641.12-12,966-3,451.36

Finding the Fourth Proportional to 8,641.12, 12,966 and 3,451.36

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Solution

The fourth proportional to 8,641.12, 12,966 and 3,451.36 is: 5,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.12 : 12,966 = 3,451.36 : x
  2. Step 2: Convert to fraction form
    8,641.12/12,966 = 3,451.36/x
  3. Step 3: Cross multiply
    8,641.12x = 12,966 × 3,451.36
  4. Step 4: Simplify right side
    8,641.12x = 44,750,333.76
  5. Step 5: Solve for x
    x = 44,750,333.76/8,641.12
  6. Step 6: Final answer
    x = 5,178.77

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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.