Home / 3,246.28-4,480.19-1,988.15

Finding the Fourth Proportional to 3,246.28, 4,480.19 and 1,988.15

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Solution

The fourth proportional to 3,246.28, 4,480.19 and 1,988.15 is: 2,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.28 : 4,480.19 = 1,988.15 : x
  2. Step 2: Convert to fraction form
    3,246.28/4,480.19 = 1,988.15/x
  3. Step 3: Cross multiply
    3,246.28x = 4,480.19 × 1,988.15
  4. Step 4: Simplify right side
    3,246.28x = 8,907,279.81
  5. Step 5: Solve for x
    x = 8,907,279.81/3,246.28
  6. Step 6: Final answer
    x = 2,743.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.