Home / 4,221.04-6,331.18-1,447.78

Finding the Fourth Proportional to 4,221.04, 6,331.18 and 1,447.78

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Solution

The fourth proportional to 4,221.04, 6,331.18 and 1,447.78 is: 2,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.04 : 6,331.18 = 1,447.78 : x
  2. Step 2: Convert to fraction form
    4,221.04/6,331.18 = 1,447.78/x
  3. Step 3: Cross multiply
    4,221.04x = 6,331.18 × 1,447.78
  4. Step 4: Simplify right side
    4,221.04x = 9,166,155.78
  5. Step 5: Solve for x
    x = 9,166,155.78/4,221.04
  6. Step 6: Final answer
    x = 2,171.54

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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.