Home / 3,240.60-4,472.34-2,122.14

Finding the Fourth Proportional to 3,240.60, 4,472.34 and 2,122.14

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Solution

The fourth proportional to 3,240.60, 4,472.34 and 2,122.14 is: 2,928.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.60 : 4,472.34 = 2,122.14 : x
  2. Step 2: Convert to fraction form
    3,240.60/4,472.34 = 2,122.14/x
  3. Step 3: Cross multiply
    3,240.60x = 4,472.34 × 2,122.14
  4. Step 4: Simplify right side
    3,240.60x = 9,490,931.61
  5. Step 5: Solve for x
    x = 9,490,931.61/3,240.60
  6. Step 6: Final answer
    x = 2,928.76

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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.