Home / 1,265.15-1,742.42-1,167.95

Finding the Fourth Proportional to 1,265.15, 1,742.42 and 1,167.95

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Solution

The fourth proportional to 1,265.15, 1,742.42 and 1,167.95 is: 1,608.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.15 : 1,742.42 = 1,167.95 : x
  2. Step 2: Convert to fraction form
    1,265.15/1,742.42 = 1,167.95/x
  3. Step 3: Cross multiply
    1,265.15x = 1,742.42 × 1,167.95
  4. Step 4: Simplify right side
    1,265.15x = 2,035,053.65
  5. Step 5: Solve for x
    x = 2,035,053.65/1,265.15
  6. Step 6: Final answer
    x = 1,608.55

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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.