Home / 1,230.18-1,686.72-1,167.54

Finding the Fourth Proportional to 1,230.18, 1,686.72 and 1,167.54

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Solution

The fourth proportional to 1,230.18, 1,686.72 and 1,167.54 is: 1,600.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.18 : 1,686.72 = 1,167.54 : x
  2. Step 2: Convert to fraction form
    1,230.18/1,686.72 = 1,167.54/x
  3. Step 3: Cross multiply
    1,230.18x = 1,686.72 × 1,167.54
  4. Step 4: Simplify right side
    1,230.18x = 1,969,313.07
  5. Step 5: Solve for x
    x = 1,969,313.07/1,230.18
  6. Step 6: Final answer
    x = 1,600.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.