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Finding the Fourth Proportional to 8,424.67, 12,637.05 and 3,743.57

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Solution

The fourth proportional to 8,424.67, 12,637.05 and 3,743.57 is: 5,615.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.67 : 12,637.05 = 3,743.57 : x
  2. Step 2: Convert to fraction form
    8,424.67/12,637.05 = 3,743.57/x
  3. Step 3: Cross multiply
    8,424.67x = 12,637.05 × 3,743.57
  4. Step 4: Simplify right side
    8,424.67x = 47,307,723.98
  5. Step 5: Solve for x
    x = 47,307,723.98/8,424.67
  6. Step 6: Final answer
    x = 5,615.38

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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.