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Finding the Fourth Proportional to 3,812.84, 5,702.52 and 3,318.76

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Solution

The fourth proportional to 3,812.84, 5,702.52 and 3,318.76 is: 4,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.84 : 5,702.52 = 3,318.76 : x
  2. Step 2: Convert to fraction form
    3,812.84/5,702.52 = 3,318.76/x
  3. Step 3: Cross multiply
    3,812.84x = 5,702.52 × 3,318.76
  4. Step 4: Simplify right side
    3,812.84x = 18,925,295.28
  5. Step 5: Solve for x
    x = 18,925,295.28/3,812.84
  6. Step 6: Final answer
    x = 4,963.57

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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.