Home / 1,649.40-2,474.18-918.43

Finding the Fourth Proportional to 1,649.40, 2,474.18 and 918.43

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Solution

The fourth proportional to 1,649.40, 2,474.18 and 918.43 is: 1,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.40 : 2,474.18 = 918.43 : x
  2. Step 2: Convert to fraction form
    1,649.40/2,474.18 = 918.43/x
  3. Step 3: Cross multiply
    1,649.40x = 2,474.18 × 918.43
  4. Step 4: Simplify right side
    1,649.40x = 2,272,348.77
  5. Step 5: Solve for x
    x = 2,272,348.77/1,649.40
  6. Step 6: Final answer
    x = 1,377.68

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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.