Home / 3,900.50-5,385.28-2,307.66

Finding the Fourth Proportional to 3,900.50, 5,385.28 and 2,307.66

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Solution

The fourth proportional to 3,900.50, 5,385.28 and 2,307.66 is: 3,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.50 : 5,385.28 = 2,307.66 : x
  2. Step 2: Convert to fraction form
    3,900.50/5,385.28 = 2,307.66/x
  3. Step 3: Cross multiply
    3,900.50x = 5,385.28 × 2,307.66
  4. Step 4: Simplify right side
    3,900.50x = 12,427,380.10
  5. Step 5: Solve for x
    x = 12,427,380.10/3,900.50
  6. Step 6: Final answer
    x = 3,186.10

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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.