Home / 8,655.08-12,981.26-3,107.56

Finding the Fourth Proportional to 8,655.08, 12,981.26 and 3,107.56

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Solution

The fourth proportional to 8,655.08, 12,981.26 and 3,107.56 is: 4,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.08 : 12,981.26 = 3,107.56 : x
  2. Step 2: Convert to fraction form
    8,655.08/12,981.26 = 3,107.56/x
  3. Step 3: Cross multiply
    8,655.08x = 12,981.26 × 3,107.56
  4. Step 4: Simplify right side
    8,655.08x = 40,340,044.33
  5. Step 5: Solve for x
    x = 40,340,044.33/8,655.08
  6. Step 6: Final answer
    x = 4,660.85

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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.