Home / 3,107.55-4,288.52-1,691.34

Finding the Fourth Proportional to 3,107.55, 4,288.52 and 1,691.34

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Solution

The fourth proportional to 3,107.55, 4,288.52 and 1,691.34 is: 2,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.55 : 4,288.52 = 1,691.34 : x
  2. Step 2: Convert to fraction form
    3,107.55/4,288.52 = 1,691.34/x
  3. Step 3: Cross multiply
    3,107.55x = 4,288.52 × 1,691.34
  4. Step 4: Simplify right side
    3,107.55x = 7,253,345.42
  5. Step 5: Solve for x
    x = 7,253,345.42/3,107.55
  6. Step 6: Final answer
    x = 2,334.10

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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.