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Finding the Fourth Proportional to 8,915.72, 13,361.75 and 4,746.75

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Solution

The fourth proportional to 8,915.72, 13,361.75 and 4,746.75 is: 7,113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.72 : 13,361.75 = 4,746.75 : x
  2. Step 2: Convert to fraction form
    8,915.72/13,361.75 = 4,746.75/x
  3. Step 3: Cross multiply
    8,915.72x = 13,361.75 × 4,746.75
  4. Step 4: Simplify right side
    8,915.72x = 63,424,863.08
  5. Step 5: Solve for x
    x = 63,424,863.08/8,915.72
  6. Step 6: Final answer
    x = 7,113.83

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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.