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Finding the Fourth Proportional to 8,912.16, 12,299.49 and 4,934.54

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Solution

The fourth proportional to 8,912.16, 12,299.49 and 4,934.54 is: 6,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.16 : 12,299.49 = 4,934.54 : x
  2. Step 2: Convert to fraction form
    8,912.16/12,299.49 = 4,934.54/x
  3. Step 3: Cross multiply
    8,912.16x = 12,299.49 × 4,934.54
  4. Step 4: Simplify right side
    8,912.16x = 60,692,263.89
  5. Step 5: Solve for x
    x = 60,692,263.89/8,912.16
  6. Step 6: Final answer
    x = 6,810.05

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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.