Home / 8,638.32-11,920.58-4,861.56

Finding the Fourth Proportional to 8,638.32, 11,920.58 and 4,861.56

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Solution

The fourth proportional to 8,638.32, 11,920.58 and 4,861.56 is: 6,708.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.32 : 11,920.58 = 4,861.56 : x
  2. Step 2: Convert to fraction form
    8,638.32/11,920.58 = 4,861.56/x
  3. Step 3: Cross multiply
    8,638.32x = 11,920.58 × 4,861.56
  4. Step 4: Simplify right side
    8,638.32x = 57,952,614.90
  5. Step 5: Solve for x
    x = 57,952,614.90/8,638.32
  6. Step 6: Final answer
    x = 6,708.78

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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.