Home / 2,219.12-3,327.48-1,247.12

Finding the Fourth Proportional to 2,219.12, 3,327.48 and 1,247.12

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Solution

The fourth proportional to 2,219.12, 3,327.48 and 1,247.12 is: 1,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.12 : 3,327.48 = 1,247.12 : x
  2. Step 2: Convert to fraction form
    2,219.12/3,327.48 = 1,247.12/x
  3. Step 3: Cross multiply
    2,219.12x = 3,327.48 × 1,247.12
  4. Step 4: Simplify right side
    2,219.12x = 4,149,766.86
  5. Step 5: Solve for x
    x = 4,149,766.86/2,219.12
  6. Step 6: Final answer
    x = 1,870.01

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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.