Home / 1,246.61-1,869.36-424.66

Finding the Fourth Proportional to 1,246.61, 1,869.36 and 424.66

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Solution

The fourth proportional to 1,246.61, 1,869.36 and 424.66 is: 636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.61 : 1,869.36 = 424.66 : x
  2. Step 2: Convert to fraction form
    1,246.61/1,869.36 = 424.66/x
  3. Step 3: Cross multiply
    1,246.61x = 1,869.36 × 424.66
  4. Step 4: Simplify right side
    1,246.61x = 793,842.42
  5. Step 5: Solve for x
    x = 793,842.42/1,246.61
  6. Step 6: Final answer
    x = 636.80

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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.