Home / 3,913.40-5,401.46-2,656.56

Finding the Fourth Proportional to 3,913.40, 5,401.46 and 2,656.56

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Solution

The fourth proportional to 3,913.40, 5,401.46 and 2,656.56 is: 3,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.40 : 5,401.46 = 2,656.56 : x
  2. Step 2: Convert to fraction form
    3,913.40/5,401.46 = 2,656.56/x
  3. Step 3: Cross multiply
    3,913.40x = 5,401.46 × 2,656.56
  4. Step 4: Simplify right side
    3,913.40x = 14,349,302.58
  5. Step 5: Solve for x
    x = 14,349,302.58/3,913.40
  6. Step 6: Final answer
    x = 3,666.71

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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.