Home / 1,649.42-2,474.21-918.45

Finding the Fourth Proportional to 1,649.42, 2,474.21 and 918.45

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Solution

The fourth proportional to 1,649.42, 2,474.21 and 918.45 is: 1,377.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.42 : 2,474.21 = 918.45 : x
  2. Step 2: Convert to fraction form
    1,649.42/2,474.21 = 918.45/x
  3. Step 3: Cross multiply
    1,649.42x = 2,474.21 × 918.45
  4. Step 4: Simplify right side
    1,649.42x = 2,272,433.58
  5. Step 5: Solve for x
    x = 2,272,433.58/1,649.42
  6. Step 6: Final answer
    x = 1,377.72

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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.