Home / 3,243.40-4,857.90-2,667.40

Finding the Fourth Proportional to 3,243.40, 4,857.90 and 2,667.40

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Solution

The fourth proportional to 3,243.40, 4,857.90 and 2,667.40 is: 3,995.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.40 : 4,857.90 = 2,667.40 : x
  2. Step 2: Convert to fraction form
    3,243.40/4,857.90 = 2,667.40/x
  3. Step 3: Cross multiply
    3,243.40x = 4,857.90 × 2,667.40
  4. Step 4: Simplify right side
    3,243.40x = 12,957,962.46
  5. Step 5: Solve for x
    x = 12,957,962.46/3,243.40
  6. Step 6: Final answer
    x = 3,995.18

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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.