Home / 2,988.11-4,121.42-2,304.21

Finding the Fourth Proportional to 2,988.11, 4,121.42 and 2,304.21

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Solution

The fourth proportional to 2,988.11, 4,121.42 and 2,304.21 is: 3,178.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.11 : 4,121.42 = 2,304.21 : x
  2. Step 2: Convert to fraction form
    2,988.11/4,121.42 = 2,304.21/x
  3. Step 3: Cross multiply
    2,988.11x = 4,121.42 × 2,304.21
  4. Step 4: Simplify right side
    2,988.11x = 9,496,617.18
  5. Step 5: Solve for x
    x = 9,496,617.18/2,988.11
  6. Step 6: Final answer
    x = 3,178.14

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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.