Home / 1,540.16-2,310.25-385.91

Finding the Fourth Proportional to 1,540.16, 2,310.25 and 385.91

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Solution

The fourth proportional to 1,540.16, 2,310.25 and 385.91 is: 578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.16 : 2,310.25 = 385.91 : x
  2. Step 2: Convert to fraction form
    1,540.16/2,310.25 = 385.91/x
  3. Step 3: Cross multiply
    1,540.16x = 2,310.25 × 385.91
  4. Step 4: Simplify right side
    1,540.16x = 891,558.44
  5. Step 5: Solve for x
    x = 891,558.44/1,540.16
  6. Step 6: Final answer
    x = 578.87

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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.