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Finding the Fourth Proportional to 8,888.28, 13,334.88 and 3,889.76

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Solution

The fourth proportional to 8,888.28, 13,334.88 and 3,889.76 is: 5,835.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.28 : 13,334.88 = 3,889.76 : x
  2. Step 2: Convert to fraction form
    8,888.28/13,334.88 = 3,889.76/x
  3. Step 3: Cross multiply
    8,888.28x = 13,334.88 × 3,889.76
  4. Step 4: Simplify right side
    8,888.28x = 51,869,480.75
  5. Step 5: Solve for x
    x = 51,869,480.75/8,888.28
  6. Step 6: Final answer
    x = 5,835.72

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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.