Home / 10,641.28-15,961.83-3,979.45

Finding the Fourth Proportional to 10,641.28, 15,961.83 and 3,979.45

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Solution

The fourth proportional to 10,641.28, 15,961.83 and 3,979.45 is: 5,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.28 : 15,961.83 = 3,979.45 : x
  2. Step 2: Convert to fraction form
    10,641.28/15,961.83 = 3,979.45/x
  3. Step 3: Cross multiply
    10,641.28x = 15,961.83 × 3,979.45
  4. Step 4: Simplify right side
    10,641.28x = 63,519,387.89
  5. Step 5: Solve for x
    x = 63,519,387.89/10,641.28
  6. Step 6: Final answer
    x = 5,969.15

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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.