Home / 4,243.20-5,857.20-2,672.40

Finding the Fourth Proportional to 4,243.20, 5,857.20 and 2,672.40

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Solution

The fourth proportional to 4,243.20, 5,857.20 and 2,672.40 is: 3,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,243.20 : 5,857.20 = 2,672.40 : x
  2. Step 2: Convert to fraction form
    4,243.20/5,857.20 = 2,672.40/x
  3. Step 3: Cross multiply
    4,243.20x = 5,857.20 × 2,672.40
  4. Step 4: Simplify right side
    4,243.20x = 15,652,781.28
  5. Step 5: Solve for x
    x = 15,652,781.28/4,243.20
  6. Step 6: Final answer
    x = 3,688.91

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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.