Home / 1,246.43-1,869.78-424.92

Finding the Fourth Proportional to 1,246.43, 1,869.78 and 424.92

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Solution

The fourth proportional to 1,246.43, 1,869.78 and 424.92 is: 637.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.43 : 1,869.78 = 424.92 : x
  2. Step 2: Convert to fraction form
    1,246.43/1,869.78 = 424.92/x
  3. Step 3: Cross multiply
    1,246.43x = 1,869.78 × 424.92
  4. Step 4: Simplify right side
    1,246.43x = 794,506.92
  5. Step 5: Solve for x
    x = 794,506.92/1,246.43
  6. Step 6: Final answer
    x = 637.43

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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.