Home / 1,540.28-2,312.35-1,235.92

Finding the Fourth Proportional to 1,540.28, 2,312.35 and 1,235.92

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Solution

The fourth proportional to 1,540.28, 2,312.35 and 1,235.92 is: 1,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.28 : 2,312.35 = 1,235.92 : x
  2. Step 2: Convert to fraction form
    1,540.28/2,312.35 = 1,235.92/x
  3. Step 3: Cross multiply
    1,540.28x = 2,312.35 × 1,235.92
  4. Step 4: Simplify right side
    1,540.28x = 2,857,879.61
  5. Step 5: Solve for x
    x = 2,857,879.61/1,540.28
  6. Step 6: Final answer
    x = 1,855.43

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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.