Home / 1,004.20-1,386.24-672.73

Finding the Fourth Proportional to 1,004.20, 1,386.24 and 672.73

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Solution

The fourth proportional to 1,004.20, 1,386.24 and 672.73 is: 928.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.20 : 1,386.24 = 672.73 : x
  2. Step 2: Convert to fraction form
    1,004.20/1,386.24 = 672.73/x
  3. Step 3: Cross multiply
    1,004.20x = 1,386.24 × 672.73
  4. Step 4: Simplify right side
    1,004.20x = 932,565.04
  5. Step 5: Solve for x
    x = 932,565.04/1,004.20
  6. Step 6: Final answer
    x = 928.67

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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.