Home / 3,142.76-4,338.03-2,261.13

Finding the Fourth Proportional to 3,142.76, 4,338.03 and 2,261.13

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Solution

The fourth proportional to 3,142.76, 4,338.03 and 2,261.13 is: 3,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.76 : 4,338.03 = 2,261.13 : x
  2. Step 2: Convert to fraction form
    3,142.76/4,338.03 = 2,261.13/x
  3. Step 3: Cross multiply
    3,142.76x = 4,338.03 × 2,261.13
  4. Step 4: Simplify right side
    3,142.76x = 9,808,816.78
  5. Step 5: Solve for x
    x = 9,808,816.78/3,142.76
  6. Step 6: Final answer
    x = 3,121.08

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Half 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.