Home / 3,240.28-4,468.14-2,122.20

Finding the Fourth Proportional to 3,240.28, 4,468.14 and 2,122.20

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Solution

The fourth proportional to 3,240.28, 4,468.14 and 2,122.20 is: 2,926.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.28 : 4,468.14 = 2,122.20 : x
  2. Step 2: Convert to fraction form
    3,240.28/4,468.14 = 2,122.20/x
  3. Step 3: Cross multiply
    3,240.28x = 4,468.14 × 2,122.20
  4. Step 4: Simplify right side
    3,240.28x = 9,482,286.71
  5. Step 5: Solve for x
    x = 9,482,286.71/3,240.28
  6. Step 6: Final answer
    x = 2,926.38

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Half scale
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Double scale
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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.