Home / 2,431.40-3,649.80-1,337.90

Finding the Fourth Proportional to 2,431.40, 3,649.80 and 1,337.90

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Solution

The fourth proportional to 2,431.40, 3,649.80 and 1,337.90 is: 2,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.40 : 3,649.80 = 1,337.90 : x
  2. Step 2: Convert to fraction form
    2,431.40/3,649.80 = 1,337.90/x
  3. Step 3: Cross multiply
    2,431.40x = 3,649.80 × 1,337.90
  4. Step 4: Simplify right side
    2,431.40x = 4,883,067.42
  5. Step 5: Solve for x
    x = 4,883,067.42/2,431.40
  6. Step 6: Final answer
    x = 2,008.34

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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.