Home / 6,139.12-9,208.56-1,979.44

Finding the Fourth Proportional to 6,139.12, 9,208.56 and 1,979.44

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Solution

The fourth proportional to 6,139.12, 9,208.56 and 1,979.44 is: 2,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.12 : 9,208.56 = 1,979.44 : x
  2. Step 2: Convert to fraction form
    6,139.12/9,208.56 = 1,979.44/x
  3. Step 3: Cross multiply
    6,139.12x = 9,208.56 × 1,979.44
  4. Step 4: Simplify right side
    6,139.12x = 18,227,792.01
  5. Step 5: Solve for x
    x = 18,227,792.01/6,139.12
  6. Step 6: Final answer
    x = 2,969.12

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Similar ratio
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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.