Home / 3,121.38-4,688.89-2,304.90

Finding the Fourth Proportional to 3,121.38, 4,688.89 and 2,304.90

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Solution

The fourth proportional to 3,121.38, 4,688.89 and 2,304.90 is: 3,462.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.38 : 4,688.89 = 2,304.90 : x
  2. Step 2: Convert to fraction form
    3,121.38/4,688.89 = 2,304.90/x
  3. Step 3: Cross multiply
    3,121.38x = 4,688.89 × 2,304.90
  4. Step 4: Simplify right side
    3,121.38x = 10,807,416.80
  5. Step 5: Solve for x
    x = 10,807,416.80/3,121.38
  6. Step 6: Final answer
    x = 3,462.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.