Home / 2,431.80-3,645.90-1,337.40

Finding the Fourth Proportional to 2,431.80, 3,645.90 and 1,337.40

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Solution

The fourth proportional to 2,431.80, 3,645.90 and 1,337.40 is: 2,005.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.80 : 3,645.90 = 1,337.40 : x
  2. Step 2: Convert to fraction form
    2,431.80/3,645.90 = 1,337.40/x
  3. Step 3: Cross multiply
    2,431.80x = 3,645.90 × 1,337.40
  4. Step 4: Simplify right side
    2,431.80x = 4,876,026.66
  5. Step 5: Solve for x
    x = 4,876,026.66/2,431.80
  6. Step 6: Final answer
    x = 2,005.11

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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.