Home / 3,147.12-4,719.60-1,272.96

Finding the Fourth Proportional to 3,147.12, 4,719.60 and 1,272.96

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Solution

The fourth proportional to 3,147.12, 4,719.60 and 1,272.96 is: 1,909.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.12 : 4,719.60 = 1,272.96 : x
  2. Step 2: Convert to fraction form
    3,147.12/4,719.60 = 1,272.96/x
  3. Step 3: Cross multiply
    3,147.12x = 4,719.60 × 1,272.96
  4. Step 4: Simplify right side
    3,147.12x = 6,007,862.02
  5. Step 5: Solve for x
    x = 6,007,862.02/3,147.12
  6. Step 6: Final answer
    x = 1,909.00

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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.