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Finding the Fourth Proportional to 8,868.65, 12,240.20 and 5,333.81

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Solution

The fourth proportional to 8,868.65, 12,240.20 and 5,333.81 is: 7,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.65 : 12,240.20 = 5,333.81 : x
  2. Step 2: Convert to fraction form
    8,868.65/12,240.20 = 5,333.81/x
  3. Step 3: Cross multiply
    8,868.65x = 12,240.20 × 5,333.81
  4. Step 4: Simplify right side
    8,868.65x = 65,286,874.49
  5. Step 5: Solve for x
    x = 65,286,874.49/8,868.65
  6. Step 6: Final answer
    x = 7,361.53

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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.