Home / 3,911.52-5,867.12-1,938.62

Finding the Fourth Proportional to 3,911.52, 5,867.12 and 1,938.62

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Solution

The fourth proportional to 3,911.52, 5,867.12 and 1,938.62 is: 2,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.52 : 5,867.12 = 1,938.62 : x
  2. Step 2: Convert to fraction form
    3,911.52/5,867.12 = 1,938.62/x
  3. Step 3: Cross multiply
    3,911.52x = 5,867.12 × 1,938.62
  4. Step 4: Simplify right side
    3,911.52x = 11,374,116.17
  5. Step 5: Solve for x
    x = 11,374,116.17/3,911.52
  6. Step 6: Final answer
    x = 2,907.85

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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.