Home / 3,238.60-4,471.38-2,491.18

Finding the Fourth Proportional to 3,238.60, 4,471.38 and 2,491.18

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Solution

The fourth proportional to 3,238.60, 4,471.38 and 2,491.18 is: 3,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.60 : 4,471.38 = 2,491.18 : x
  2. Step 2: Convert to fraction form
    3,238.60/4,471.38 = 2,491.18/x
  3. Step 3: Cross multiply
    3,238.60x = 4,471.38 × 2,491.18
  4. Step 4: Simplify right side
    3,238.60x = 11,139,012.43
  5. Step 5: Solve for x
    x = 11,139,012.43/3,238.60
  6. Step 6: Final answer
    x = 3,439.45

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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.