Home / 1,324.36-1,985.73-675.55

Finding the Fourth Proportional to 1,324.36, 1,985.73 and 675.55

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Solution

The fourth proportional to 1,324.36, 1,985.73 and 675.55 is: 1,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.36 : 1,985.73 = 675.55 : x
  2. Step 2: Convert to fraction form
    1,324.36/1,985.73 = 675.55/x
  3. Step 3: Cross multiply
    1,324.36x = 1,985.73 × 675.55
  4. Step 4: Simplify right side
    1,324.36x = 1,341,459.90
  5. Step 5: Solve for x
    x = 1,341,459.90/1,324.36
  6. Step 6: Final answer
    x = 1,012.91

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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.