Home / 6,147.28-9,220.92-1,990.83

Finding the Fourth Proportional to 6,147.28, 9,220.92 and 1,990.83

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Solution

The fourth proportional to 6,147.28, 9,220.92 and 1,990.83 is: 2,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,147.28 : 9,220.92 = 1,990.83 : x
  2. Step 2: Convert to fraction form
    6,147.28/9,220.92 = 1,990.83/x
  3. Step 3: Cross multiply
    6,147.28x = 9,220.92 × 1,990.83
  4. Step 4: Simplify right side
    6,147.28x = 18,357,284.16
  5. Step 5: Solve for x
    x = 18,357,284.16/6,147.28
  6. Step 6: Final answer
    x = 2,986.25

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Double scale
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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.