Home / 7,119.49-9,824.97-3,932.78

Finding the Fourth Proportional to 7,119.49, 9,824.97 and 3,932.78

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Solution

The fourth proportional to 7,119.49, 9,824.97 and 3,932.78 is: 5,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.49 : 9,824.97 = 3,932.78 : x
  2. Step 2: Convert to fraction form
    7,119.49/9,824.97 = 3,932.78/x
  3. Step 3: Cross multiply
    7,119.49x = 9,824.97 × 3,932.78
  4. Step 4: Simplify right side
    7,119.49x = 38,639,445.52
  5. Step 5: Solve for x
    x = 38,639,445.52/7,119.49
  6. Step 6: Final answer
    x = 5,427.28

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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.