Home / 3,107.61-4,288.53-1,691.31

Finding the Fourth Proportional to 3,107.61, 4,288.53 and 1,691.31

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Solution

The fourth proportional to 3,107.61, 4,288.53 and 1,691.31 is: 2,334.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.61 : 4,288.53 = 1,691.31 : x
  2. Step 2: Convert to fraction form
    3,107.61/4,288.53 = 1,691.31/x
  3. Step 3: Cross multiply
    3,107.61x = 4,288.53 × 1,691.31
  4. Step 4: Simplify right side
    3,107.61x = 7,253,235.94
  5. Step 5: Solve for x
    x = 7,253,235.94/3,107.61
  6. Step 6: Final answer
    x = 2,334.02

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1.5x scale

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.