Home / 1,508.18-2,080.55-1,065.11

Finding the Fourth Proportional to 1,508.18, 2,080.55 and 1,065.11

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Solution

The fourth proportional to 1,508.18, 2,080.55 and 1,065.11 is: 1,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.18 : 2,080.55 = 1,065.11 : x
  2. Step 2: Convert to fraction form
    1,508.18/2,080.55 = 1,065.11/x
  3. Step 3: Cross multiply
    1,508.18x = 2,080.55 × 1,065.11
  4. Step 4: Simplify right side
    1,508.18x = 2,215,998.88
  5. Step 5: Solve for x
    x = 2,215,998.88/1,508.18
  6. Step 6: Final answer
    x = 1,469.32

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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.