Home / 4,989.60-6,881.76-3,221.64

Finding the Fourth Proportional to 4,989.60, 6,881.76 and 3,221.64

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Solution

The fourth proportional to 4,989.60, 6,881.76 and 3,221.64 is: 4,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.60 : 6,881.76 = 3,221.64 : x
  2. Step 2: Convert to fraction form
    4,989.60/6,881.76 = 3,221.64/x
  3. Step 3: Cross multiply
    4,989.60x = 6,881.76 × 3,221.64
  4. Step 4: Simplify right side
    4,989.60x = 22,170,553.29
  5. Step 5: Solve for x
    x = 22,170,553.29/4,989.60
  6. Step 6: Final answer
    x = 4,443.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.