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Finding the Fourth Proportional to 8,763.76, 12,096.48 and 4,988.96

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Solution

The fourth proportional to 8,763.76, 12,096.48 and 4,988.96 is: 6,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.76 : 12,096.48 = 4,988.96 : x
  2. Step 2: Convert to fraction form
    8,763.76/12,096.48 = 4,988.96/x
  3. Step 3: Cross multiply
    8,763.76x = 12,096.48 × 4,988.96
  4. Step 4: Simplify right side
    8,763.76x = 60,348,854.86
  5. Step 5: Solve for x
    x = 60,348,854.86/8,763.76
  6. Step 6: Final answer
    x = 6,886.18

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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.