Home / 8,279.42-12,424.60-3,898.13

Finding the Fourth Proportional to 8,279.42, 12,424.60 and 3,898.13

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Solution

The fourth proportional to 8,279.42, 12,424.60 and 3,898.13 is: 5,849.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.42 : 12,424.60 = 3,898.13 : x
  2. Step 2: Convert to fraction form
    8,279.42/12,424.60 = 3,898.13/x
  3. Step 3: Cross multiply
    8,279.42x = 12,424.60 × 3,898.13
  4. Step 4: Simplify right side
    8,279.42x = 48,432,706.00
  5. Step 5: Solve for x
    x = 48,432,706.00/8,279.42
  6. Step 6: Final answer
    x = 5,849.77

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1.5x scale

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.