Home / 2,540.18-3,810.35-874.28

Finding the Fourth Proportional to 2,540.18, 3,810.35 and 874.28

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Solution

The fourth proportional to 2,540.18, 3,810.35 and 874.28 is: 1,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.18 : 3,810.35 = 874.28 : x
  2. Step 2: Convert to fraction form
    2,540.18/3,810.35 = 874.28/x
  3. Step 3: Cross multiply
    2,540.18x = 3,810.35 × 874.28
  4. Step 4: Simplify right side
    2,540.18x = 3,331,312.80
  5. Step 5: Solve for x
    x = 3,331,312.80/2,540.18
  6. Step 6: Final answer
    x = 1,311.45

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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.