Home / 1,167.20-1,610.64-694.88

Finding the Fourth Proportional to 1,167.20, 1,610.64 and 694.88

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Solution

The fourth proportional to 1,167.20, 1,610.64 and 694.88 is: 958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.20 : 1,610.64 = 694.88 : x
  2. Step 2: Convert to fraction form
    1,167.20/1,610.64 = 694.88/x
  3. Step 3: Cross multiply
    1,167.20x = 1,610.64 × 694.88
  4. Step 4: Simplify right side
    1,167.20x = 1,119,201.52
  5. Step 5: Solve for x
    x = 1,119,201.52/1,167.20
  6. Step 6: Final answer
    x = 958.88

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1.5x scale

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.