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Finding the Fourth Proportional to 8,515.48, 12,774.84 and 4,135

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Solution

The fourth proportional to 8,515.48, 12,774.84 and 4,135 is: 6,203.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.48 : 12,774.84 = 4,135 : x
  2. Step 2: Convert to fraction form
    8,515.48/12,774.84 = 4,135/x
  3. Step 3: Cross multiply
    8,515.48x = 12,774.84 × 4,135
  4. Step 4: Simplify right side
    8,515.48x = 52,823,963.40
  5. Step 5: Solve for x
    x = 52,823,963.40/8,515.48
  6. Step 6: Final answer
    x = 6,203.29

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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.