Home / 8,358.38-12,530.57-3,431.55

Finding the Fourth Proportional to 8,358.38, 12,530.57 and 3,431.55

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Solution

The fourth proportional to 8,358.38, 12,530.57 and 3,431.55 is: 5,144.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.38 : 12,530.57 = 3,431.55 : x
  2. Step 2: Convert to fraction form
    8,358.38/12,530.57 = 3,431.55/x
  3. Step 3: Cross multiply
    8,358.38x = 12,530.57 × 3,431.55
  4. Step 4: Simplify right side
    8,358.38x = 42,999,286.06
  5. Step 5: Solve for x
    x = 42,999,286.06/8,358.38
  6. Step 6: Final answer
    x = 5,144.46

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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.