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Finding the Fourth Proportional to 2,472.82, 3,412.16 and 1,424.68

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Solution

The fourth proportional to 2,472.82, 3,412.16 and 1,424.68 is: 1,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,472.82 : 3,412.16 = 1,424.68 : x
  2. Step 2: Convert to fraction form
    2,472.82/3,412.16 = 1,424.68/x
  3. Step 3: Cross multiply
    2,472.82x = 3,412.16 × 1,424.68
  4. Step 4: Simplify right side
    2,472.82x = 4,861,225.80
  5. Step 5: Solve for x
    x = 4,861,225.80/2,472.82
  6. Step 6: Final answer
    x = 1,965.87

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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.