Home / 1,245.94-1,869.11-424.26

Finding the Fourth Proportional to 1,245.94, 1,869.11 and 424.26

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Solution

The fourth proportional to 1,245.94, 1,869.11 and 424.26 is: 636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.94 : 1,869.11 = 424.26 : x
  2. Step 2: Convert to fraction form
    1,245.94/1,869.11 = 424.26/x
  3. Step 3: Cross multiply
    1,245.94x = 1,869.11 × 424.26
  4. Step 4: Simplify right side
    1,245.94x = 792,988.61
  5. Step 5: Solve for x
    x = 792,988.61/1,245.94
  6. Step 6: Final answer
    x = 636.46

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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.