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Finding the Fourth Proportional to 8,805.76, 13,211.52 and 4,188.16

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Solution

The fourth proportional to 8,805.76, 13,211.52 and 4,188.16 is: 6,283.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.76 : 13,211.52 = 4,188.16 : x
  2. Step 2: Convert to fraction form
    8,805.76/13,211.52 = 4,188.16/x
  3. Step 3: Cross multiply
    8,805.76x = 13,211.52 × 4,188.16
  4. Step 4: Simplify right side
    8,805.76x = 55,331,959.60
  5. Step 5: Solve for x
    x = 55,331,959.60/8,805.76
  6. Step 6: Final answer
    x = 6,283.61

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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.