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Finding the Fourth Proportional to 8,343.57, 12,510.61 and 4,390.64

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Solution

The fourth proportional to 8,343.57, 12,510.61 and 4,390.64 is: 6,583.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,343.57 : 12,510.61 = 4,390.64 : x
  2. Step 2: Convert to fraction form
    8,343.57/12,510.61 = 4,390.64/x
  3. Step 3: Cross multiply
    8,343.57x = 12,510.61 × 4,390.64
  4. Step 4: Simplify right side
    8,343.57x = 54,929,584.69
  5. Step 5: Solve for x
    x = 54,929,584.69/8,343.57
  6. Step 6: Final answer
    x = 6,583.46

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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.