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Finding the Fourth Proportional to 8,788.71, 13,188.48 and 7,968.45

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Solution

The fourth proportional to 8,788.71, 13,188.48 and 7,968.45 is: 11,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.71 : 13,188.48 = 7,968.45 : x
  2. Step 2: Convert to fraction form
    8,788.71/13,188.48 = 7,968.45/x
  3. Step 3: Cross multiply
    8,788.71x = 13,188.48 × 7,968.45
  4. Step 4: Simplify right side
    8,788.71x = 105,091,743.46
  5. Step 5: Solve for x
    x = 105,091,743.46/8,788.71
  6. Step 6: Final answer
    x = 11,957.58

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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.