Home / 1,540.18-2,312.70-1,359.10

Finding the Fourth Proportional to 1,540.18, 2,312.70 and 1,359.10

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Solution

The fourth proportional to 1,540.18, 2,312.70 and 1,359.10 is: 2,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.18 : 2,312.70 = 1,359.10 : x
  2. Step 2: Convert to fraction form
    1,540.18/2,312.70 = 1,359.10/x
  3. Step 3: Cross multiply
    1,540.18x = 2,312.70 × 1,359.10
  4. Step 4: Simplify right side
    1,540.18x = 3,143,190.57
  5. Step 5: Solve for x
    x = 3,143,190.57/1,540.18
  6. Step 6: Final answer
    x = 2,040.79

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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.