Home / 2,540.61-3,505.92-1,421.61

Finding the Fourth Proportional to 2,540.61, 3,505.92 and 1,421.61

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Solution

The fourth proportional to 2,540.61, 3,505.92 and 1,421.61 is: 1,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.61 : 3,505.92 = 1,421.61 : x
  2. Step 2: Convert to fraction form
    2,540.61/3,505.92 = 1,421.61/x
  3. Step 3: Cross multiply
    2,540.61x = 3,505.92 × 1,421.61
  4. Step 4: Simplify right side
    2,540.61x = 4,984,050.93
  5. Step 5: Solve for x
    x = 4,984,050.93/2,540.61
  6. Step 6: Final answer
    x = 1,961.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.