Home / 3,959.60-5,931.78-2,222.96

Finding the Fourth Proportional to 3,959.60, 5,931.78 and 2,222.96

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Solution

The fourth proportional to 3,959.60, 5,931.78 and 2,222.96 is: 3,330.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.60 : 5,931.78 = 2,222.96 : x
  2. Step 2: Convert to fraction form
    3,959.60/5,931.78 = 2,222.96/x
  3. Step 3: Cross multiply
    3,959.60x = 5,931.78 × 2,222.96
  4. Step 4: Simplify right side
    3,959.60x = 13,186,109.67
  5. Step 5: Solve for x
    x = 13,186,109.67/3,959.60
  6. Step 6: Final answer
    x = 3,330.16

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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.