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Finding the Fourth Proportional to 8,811.84, 12,164.16 and 5,274.39

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Solution

The fourth proportional to 8,811.84, 12,164.16 and 5,274.39 is: 7,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.84 : 12,164.16 = 5,274.39 : x
  2. Step 2: Convert to fraction form
    8,811.84/12,164.16 = 5,274.39/x
  3. Step 3: Cross multiply
    8,811.84x = 12,164.16 × 5,274.39
  4. Step 4: Simplify right side
    8,811.84x = 64,158,523.86
  5. Step 5: Solve for x
    x = 64,158,523.86/8,811.84
  6. Step 6: Final answer
    x = 7,280.95

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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.