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Finding the Fourth Proportional to 8,657.97, 11,946.48 and 5,119.89

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Solution

The fourth proportional to 8,657.97, 11,946.48 and 5,119.89 is: 7,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.97 : 11,946.48 = 5,119.89 : x
  2. Step 2: Convert to fraction form
    8,657.97/11,946.48 = 5,119.89/x
  3. Step 3: Cross multiply
    8,657.97x = 11,946.48 × 5,119.89
  4. Step 4: Simplify right side
    8,657.97x = 61,164,599.49
  5. Step 5: Solve for x
    x = 61,164,599.49/8,657.97
  6. Step 6: Final answer
    x = 7,064.55

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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.