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Finding the Fourth Proportional to 8,662.80, 12,983.76 and 4,967.76

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Solution

The fourth proportional to 8,662.80, 12,983.76 and 4,967.76 is: 7,445.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.80 : 12,983.76 = 4,967.76 : x
  2. Step 2: Convert to fraction form
    8,662.80/12,983.76 = 4,967.76/x
  3. Step 3: Cross multiply
    8,662.80x = 12,983.76 × 4,967.76
  4. Step 4: Simplify right side
    8,662.80x = 64,500,203.58
  5. Step 5: Solve for x
    x = 64,500,203.58/8,662.80
  6. Step 6: Final answer
    x = 7,445.65

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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.