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Finding the Fourth Proportional to 8,613.78, 11,888.33 and 5,258.55

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Solution

The fourth proportional to 8,613.78, 11,888.33 and 5,258.55 is: 7,257.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.78 : 11,888.33 = 5,258.55 : x
  2. Step 2: Convert to fraction form
    8,613.78/11,888.33 = 5,258.55/x
  3. Step 3: Cross multiply
    8,613.78x = 11,888.33 × 5,258.55
  4. Step 4: Simplify right side
    8,613.78x = 62,515,351.43
  5. Step 5: Solve for x
    x = 62,515,351.43/8,613.78
  6. Step 6: Final answer
    x = 7,257.60

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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.