Home / 3,447.32-5,165.30-1,987.70

Finding the Fourth Proportional to 3,447.32, 5,165.30 and 1,987.70

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Solution

The fourth proportional to 3,447.32, 5,165.30 and 1,987.70 is: 2,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.32 : 5,165.30 = 1,987.70 : x
  2. Step 2: Convert to fraction form
    3,447.32/5,165.30 = 1,987.70/x
  3. Step 3: Cross multiply
    3,447.32x = 5,165.30 × 1,987.70
  4. Step 4: Simplify right side
    3,447.32x = 10,267,045.95
  5. Step 5: Solve for x
    x = 10,267,045.95/3,447.32
  6. Step 6: Final answer
    x = 2,978.27

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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.