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Finding the Fourth Proportional to 8,704.50, 12,013.20 and 4,929.18

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Solution

The fourth proportional to 8,704.50, 12,013.20 and 4,929.18 is: 6,802.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.50 : 12,013.20 = 4,929.18 : x
  2. Step 2: Convert to fraction form
    8,704.50/12,013.20 = 4,929.18/x
  3. Step 3: Cross multiply
    8,704.50x = 12,013.20 × 4,929.18
  4. Step 4: Simplify right side
    8,704.50x = 59,215,225.18
  5. Step 5: Solve for x
    x = 59,215,225.18/8,704.50
  6. Step 6: Final answer
    x = 6,802.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.