Home / 6,120.18-9,180.87-1,959.14

Finding the Fourth Proportional to 6,120.18, 9,180.87 and 1,959.14

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Solution

The fourth proportional to 6,120.18, 9,180.87 and 1,959.14 is: 2,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,120.18 : 9,180.87 = 1,959.14 : x
  2. Step 2: Convert to fraction form
    6,120.18/9,180.87 = 1,959.14/x
  3. Step 3: Cross multiply
    6,120.18x = 9,180.87 × 1,959.14
  4. Step 4: Simplify right side
    6,120.18x = 17,986,609.65
  5. Step 5: Solve for x
    x = 17,986,609.65/6,120.18
  6. Step 6: Final answer
    x = 2,938.90

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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.