Home / 1,324.20-1,985.58-675.48

Finding the Fourth Proportional to 1,324.20, 1,985.58 and 675.48

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Solution

The fourth proportional to 1,324.20, 1,985.58 and 675.48 is: 1,012.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.20 : 1,985.58 = 675.48 : x
  2. Step 2: Convert to fraction form
    1,324.20/1,985.58 = 675.48/x
  3. Step 3: Cross multiply
    1,324.20x = 1,985.58 × 675.48
  4. Step 4: Simplify right side
    1,324.20x = 1,341,219.58
  5. Step 5: Solve for x
    x = 1,341,219.58/1,324.20
  6. Step 6: Final answer
    x = 1,012.85

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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.