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Finding the Fourth Proportional to 3,951.17, 5,922.40 and 2,860.30

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Solution

The fourth proportional to 3,951.17, 5,922.40 and 2,860.30 is: 4,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.17 : 5,922.40 = 2,860.30 : x
  2. Step 2: Convert to fraction form
    3,951.17/5,922.40 = 2,860.30/x
  3. Step 3: Cross multiply
    3,951.17x = 5,922.40 × 2,860.30
  4. Step 4: Simplify right side
    3,951.17x = 16,939,840.72
  5. Step 5: Solve for x
    x = 16,939,840.72/3,951.17
  6. Step 6: Final answer
    x = 4,287.30

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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.