Home / 8,423.12-12,631.21-2,876.91

Finding the Fourth Proportional to 8,423.12, 12,631.21 and 2,876.91

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Solution

The fourth proportional to 8,423.12, 12,631.21 and 2,876.91 is: 4,314.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.12 : 12,631.21 = 2,876.91 : x
  2. Step 2: Convert to fraction form
    8,423.12/12,631.21 = 2,876.91/x
  3. Step 3: Cross multiply
    8,423.12x = 12,631.21 × 2,876.91
  4. Step 4: Simplify right side
    8,423.12x = 36,338,854.36
  5. Step 5: Solve for x
    x = 36,338,854.36/8,423.12
  6. Step 6: Final answer
    x = 4,314.18

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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.