Home / 2,931.10-4,044.92-1,811.78

Finding the Fourth Proportional to 2,931.10, 4,044.92 and 1,811.78

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Solution

The fourth proportional to 2,931.10, 4,044.92 and 1,811.78 is: 2,500.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.10 : 4,044.92 = 1,811.78 : x
  2. Step 2: Convert to fraction form
    2,931.10/4,044.92 = 1,811.78/x
  3. Step 3: Cross multiply
    2,931.10x = 4,044.92 × 1,811.78
  4. Step 4: Simplify right side
    2,931.10x = 7,328,505.16
  5. Step 5: Solve for x
    x = 7,328,505.16/2,931.10
  6. Step 6: Final answer
    x = 2,500.26

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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.