Home / 1,138.11-1,708.35-1,008.93

Finding the Fourth Proportional to 1,138.11, 1,708.35 and 1,008.93

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Solution

The fourth proportional to 1,138.11, 1,708.35 and 1,008.93 is: 1,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138.11 : 1,708.35 = 1,008.93 : x
  2. Step 2: Convert to fraction form
    1,138.11/1,708.35 = 1,008.93/x
  3. Step 3: Cross multiply
    1,138.11x = 1,708.35 × 1,008.93
  4. Step 4: Simplify right side
    1,138.11x = 1,723,605.57
  5. Step 5: Solve for x
    x = 1,723,605.57/1,138.11
  6. Step 6: Final answer
    x = 1,514.45

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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.