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Finding the Fourth Proportional to 8,748.76, 12,087.48 and 7,796.20

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Solution

The fourth proportional to 8,748.76, 12,087.48 and 7,796.20 is: 10,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,748.76 : 12,087.48 = 7,796.20 : x
  2. Step 2: Convert to fraction form
    8,748.76/12,087.48 = 7,796.20/x
  3. Step 3: Cross multiply
    8,748.76x = 12,087.48 × 7,796.20
  4. Step 4: Simplify right side
    8,748.76x = 94,236,411.58
  5. Step 5: Solve for x
    x = 94,236,411.58/8,748.76
  6. Step 6: Final answer
    x = 10,771.40

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Half scale
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Double scale
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Similar ratio
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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.