Home / 1,167.12-1,752.50-1,115.18

Finding the Fourth Proportional to 1,167.12, 1,752.50 and 1,115.18

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Solution

The fourth proportional to 1,167.12, 1,752.50 and 1,115.18 is: 1,674.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.12 : 1,752.50 = 1,115.18 : x
  2. Step 2: Convert to fraction form
    1,167.12/1,752.50 = 1,115.18/x
  3. Step 3: Cross multiply
    1,167.12x = 1,752.50 × 1,115.18
  4. Step 4: Simplify right side
    1,167.12x = 1,954,353.55
  5. Step 5: Solve for x
    x = 1,954,353.55/1,167.12
  6. Step 6: Final answer
    x = 1,674.51

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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.