Home / 3,117.28-4,304.88-1,938.88

Finding the Fourth Proportional to 3,117.28, 4,304.88 and 1,938.88

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Solution

The fourth proportional to 3,117.28, 4,304.88 and 1,938.88 is: 2,677.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.28 : 4,304.88 = 1,938.88 : x
  2. Step 2: Convert to fraction form
    3,117.28/4,304.88 = 1,938.88/x
  3. Step 3: Cross multiply
    3,117.28x = 4,304.88 × 1,938.88
  4. Step 4: Simplify right side
    3,117.28x = 8,346,645.73
  5. Step 5: Solve for x
    x = 8,346,645.73/3,117.28
  6. Step 6: Final answer
    x = 2,677.54

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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.