Home / 8,912.56-12,298.80-5,230.12

Finding the Fourth Proportional to 8,912.56, 12,298.80 and 5,230.12

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Solution

The fourth proportional to 8,912.56, 12,298.80 and 5,230.12 is: 7,217.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.56 : 12,298.80 = 5,230.12 : x
  2. Step 2: Convert to fraction form
    8,912.56/12,298.80 = 5,230.12/x
  3. Step 3: Cross multiply
    8,912.56x = 12,298.80 × 5,230.12
  4. Step 4: Simplify right side
    8,912.56x = 64,324,189.72
  5. Step 5: Solve for x
    x = 64,324,189.72/8,912.56
  6. Step 6: Final answer
    x = 7,217.25

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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.