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Finding the Fourth Proportional to 8,062.88, 11,127.98 and 4,920.89

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Solution

The fourth proportional to 8,062.88, 11,127.98 and 4,920.89 is: 6,791.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,062.88 : 11,127.98 = 4,920.89 : x
  2. Step 2: Convert to fraction form
    8,062.88/11,127.98 = 4,920.89/x
  3. Step 3: Cross multiply
    8,062.88x = 11,127.98 × 4,920.89
  4. Step 4: Simplify right side
    8,062.88x = 54,759,522.16
  5. Step 5: Solve for x
    x = 54,759,522.16/8,062.88
  6. Step 6: Final answer
    x = 6,791.56

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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.