Home / 9,145.31-12,591.65-8,067.30

Finding the Fourth Proportional to 9,145.31, 12,591.65 and 8,067.30

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Solution

The fourth proportional to 9,145.31, 12,591.65 and 8,067.30 is: 11,107.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.31 : 12,591.65 = 8,067.30 : x
  2. Step 2: Convert to fraction form
    9,145.31/12,591.65 = 8,067.30/x
  3. Step 3: Cross multiply
    9,145.31x = 12,591.65 × 8,067.30
  4. Step 4: Simplify right side
    9,145.31x = 101,580,590.99
  5. Step 5: Solve for x
    x = 101,580,590.99/9,145.31
  6. Step 6: Final answer
    x = 11,107.40

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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.