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Finding the Fourth Proportional to 8,768.32, 12,102.96 and 5,412.16

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Solution

The fourth proportional to 8,768.32, 12,102.96 and 5,412.16 is: 7,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.32 : 12,102.96 = 5,412.16 : x
  2. Step 2: Convert to fraction form
    8,768.32/12,102.96 = 5,412.16/x
  3. Step 3: Cross multiply
    8,768.32x = 12,102.96 × 5,412.16
  4. Step 4: Simplify right side
    8,768.32x = 65,503,155.99
  5. Step 5: Solve for x
    x = 65,503,155.99/8,768.32
  6. Step 6: Final answer
    x = 7,470.43

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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.