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Finding the Fourth Proportional to 9,199.98, 12,695.54 and 5,220.55

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Solution

The fourth proportional to 9,199.98, 12,695.54 and 5,220.55 is: 7,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,199.98 : 12,695.54 = 5,220.55 : x
  2. Step 2: Convert to fraction form
    9,199.98/12,695.54 = 5,220.55/x
  3. Step 3: Cross multiply
    9,199.98x = 12,695.54 × 5,220.55
  4. Step 4: Simplify right side
    9,199.98x = 66,277,691.11
  5. Step 5: Solve for x
    x = 66,277,691.11/9,199.98
  6. Step 6: Final answer
    x = 7,204.11

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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.