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Finding the Fourth Proportional to 8,423.76, 12,638.12 and 4,044.92

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Solution

The fourth proportional to 8,423.76, 12,638.12 and 4,044.92 is: 6,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.76 : 12,638.12 = 4,044.92 : x
  2. Step 2: Convert to fraction form
    8,423.76/12,638.12 = 4,044.92/x
  3. Step 3: Cross multiply
    8,423.76x = 12,638.12 × 4,044.92
  4. Step 4: Simplify right side
    8,423.76x = 51,120,184.35
  5. Step 5: Solve for x
    x = 51,120,184.35/8,423.76
  6. Step 6: Final answer
    x = 6,068.57

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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.