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Finding the Fourth Proportional to 6,662.88, 9,988.92 and 2,770.20

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Solution

The fourth proportional to 6,662.88, 9,988.92 and 2,770.20 is: 4,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,662.88 : 9,988.92 = 2,770.20 : x
  2. Step 2: Convert to fraction form
    6,662.88/9,988.92 = 2,770.20/x
  3. Step 3: Cross multiply
    6,662.88x = 9,988.92 × 2,770.20
  4. Step 4: Simplify right side
    6,662.88x = 27,671,306.18
  5. Step 5: Solve for x
    x = 27,671,306.18/6,662.88
  6. Step 6: Final answer
    x = 4,153.05

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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.