Home / 3,913.28-5,401.28-2,656.43

Finding the Fourth Proportional to 3,913.28, 5,401.28 and 2,656.43

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Solution

The fourth proportional to 3,913.28, 5,401.28 and 2,656.43 is: 3,666.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.28 : 5,401.28 = 2,656.43 : x
  2. Step 2: Convert to fraction form
    3,913.28/5,401.28 = 2,656.43/x
  3. Step 3: Cross multiply
    3,913.28x = 5,401.28 × 2,656.43
  4. Step 4: Simplify right side
    3,913.28x = 14,348,122.12
  5. Step 5: Solve for x
    x = 14,348,122.12/3,913.28
  6. Step 6: Final answer
    x = 3,666.52

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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.