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Finding the Fourth Proportional to 8,500.84, 12,738.78 and 4,278.29

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Solution

The fourth proportional to 8,500.84, 12,738.78 and 4,278.29 is: 6,411.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.84 : 12,738.78 = 4,278.29 : x
  2. Step 2: Convert to fraction form
    8,500.84/12,738.78 = 4,278.29/x
  3. Step 3: Cross multiply
    8,500.84x = 12,738.78 × 4,278.29
  4. Step 4: Simplify right side
    8,500.84x = 54,500,131.39
  5. Step 5: Solve for x
    x = 54,500,131.39/8,500.84
  6. Step 6: Final answer
    x = 6,411.15

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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.