Home / 3,543.30-5,315.15-1,078.20

Finding the Fourth Proportional to 3,543.30, 5,315.15 and 1,078.20

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Solution

The fourth proportional to 3,543.30, 5,315.15 and 1,078.20 is: 1,617.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.30 : 5,315.15 = 1,078.20 : x
  2. Step 2: Convert to fraction form
    3,543.30/5,315.15 = 1,078.20/x
  3. Step 3: Cross multiply
    3,543.30x = 5,315.15 × 1,078.20
  4. Step 4: Simplify right side
    3,543.30x = 5,730,794.73
  5. Step 5: Solve for x
    x = 5,730,794.73/3,543.30
  6. Step 6: Final answer
    x = 1,617.36

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1.5x scale

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.