Home / 8,158.78-12,238.18-2,235.72

Finding the Fourth Proportional to 8,158.78, 12,238.18 and 2,235.72

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Solution

The fourth proportional to 8,158.78, 12,238.18 and 2,235.72 is: 3,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.78 : 12,238.18 = 2,235.72 : x
  2. Step 2: Convert to fraction form
    8,158.78/12,238.18 = 2,235.72/x
  3. Step 3: Cross multiply
    8,158.78x = 12,238.18 × 2,235.72
  4. Step 4: Simplify right side
    8,158.78x = 27,361,077.01
  5. Step 5: Solve for x
    x = 27,361,077.01/8,158.78
  6. Step 6: Final answer
    x = 3,353.57

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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.