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Finding the Fourth Proportional to 8,856.54, 13,290.95 and 5,728.76

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Solution

The fourth proportional to 8,856.54, 13,290.95 and 5,728.76 is: 8,597.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.54 : 13,290.95 = 5,728.76 : x
  2. Step 2: Convert to fraction form
    8,856.54/13,290.95 = 5,728.76/x
  3. Step 3: Cross multiply
    8,856.54x = 13,290.95 × 5,728.76
  4. Step 4: Simplify right side
    8,856.54x = 76,140,660.43
  5. Step 5: Solve for x
    x = 76,140,660.43/8,856.54
  6. Step 6: Final answer
    x = 8,597.11

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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.