Home / 7,173.71-10,761.19-1,979.59

Finding the Fourth Proportional to 7,173.71, 10,761.19 and 1,979.59

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Solution

The fourth proportional to 7,173.71, 10,761.19 and 1,979.59 is: 2,969.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.71 : 10,761.19 = 1,979.59 : x
  2. Step 2: Convert to fraction form
    7,173.71/10,761.19 = 1,979.59/x
  3. Step 3: Cross multiply
    7,173.71x = 10,761.19 × 1,979.59
  4. Step 4: Simplify right side
    7,173.71x = 21,302,680.41
  5. Step 5: Solve for x
    x = 21,302,680.41/7,173.71
  6. Step 6: Final answer
    x = 2,969.55

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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.