Home / 8,436.87-12,663.03-4,279.76

Finding the Fourth Proportional to 8,436.87, 12,663.03 and 4,279.76

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Solution

The fourth proportional to 8,436.87, 12,663.03 and 4,279.76 is: 6,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.87 : 12,663.03 = 4,279.76 : x
  2. Step 2: Convert to fraction form
    8,436.87/12,663.03 = 4,279.76/x
  3. Step 3: Cross multiply
    8,436.87x = 12,663.03 × 4,279.76
  4. Step 4: Simplify right side
    8,436.87x = 54,194,665.96
  5. Step 5: Solve for x
    x = 54,194,665.96/8,436.87
  6. Step 6: Final answer
    x = 6,423.55

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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.