Home / 1,540.15-2,125.10-1,015.88

Finding the Fourth Proportional to 1,540.15, 2,125.10 and 1,015.88

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Solution

The fourth proportional to 1,540.15, 2,125.10 and 1,015.88 is: 1,401.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.15 : 2,125.10 = 1,015.88 : x
  2. Step 2: Convert to fraction form
    1,540.15/2,125.10 = 1,015.88/x
  3. Step 3: Cross multiply
    1,540.15x = 2,125.10 × 1,015.88
  4. Step 4: Simplify right side
    1,540.15x = 2,158,838.50
  5. Step 5: Solve for x
    x = 2,158,838.50/1,540.15
  6. Step 6: Final answer
    x = 1,401.71

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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.