Home / 1,539.18-2,311.20-1,358.10

Finding the Fourth Proportional to 1,539.18, 2,311.20 and 1,358.10

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Solution

The fourth proportional to 1,539.18, 2,311.20 and 1,358.10 is: 2,039.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.18 : 2,311.20 = 1,358.10 : x
  2. Step 2: Convert to fraction form
    1,539.18/2,311.20 = 1,358.10/x
  3. Step 3: Cross multiply
    1,539.18x = 2,311.20 × 1,358.10
  4. Step 4: Simplify right side
    1,539.18x = 3,138,840.72
  5. Step 5: Solve for x
    x = 3,138,840.72/1,539.18
  6. Step 6: Final answer
    x = 2,039.29

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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.