Home / 3,390.52-5,086.30-1,442.20

Finding the Fourth Proportional to 3,390.52, 5,086.30 and 1,442.20

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Solution

The fourth proportional to 3,390.52, 5,086.30 and 1,442.20 is: 2,163.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.52 : 5,086.30 = 1,442.20 : x
  2. Step 2: Convert to fraction form
    3,390.52/5,086.30 = 1,442.20/x
  3. Step 3: Cross multiply
    3,390.52x = 5,086.30 × 1,442.20
  4. Step 4: Simplify right side
    3,390.52x = 7,335,461.86
  5. Step 5: Solve for x
    x = 7,335,461.86/3,390.52
  6. Step 6: Final answer
    x = 2,163.52

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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.