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Finding the Fourth Proportional to 3,805.78, 5,702.51 and 2,486.75

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Solution

The fourth proportional to 3,805.78, 5,702.51 and 2,486.75 is: 3,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.78 : 5,702.51 = 2,486.75 : x
  2. Step 2: Convert to fraction form
    3,805.78/5,702.51 = 2,486.75/x
  3. Step 3: Cross multiply
    3,805.78x = 5,702.51 × 2,486.75
  4. Step 4: Simplify right side
    3,805.78x = 14,180,694.45
  5. Step 5: Solve for x
    x = 14,180,694.45/3,805.78
  6. Step 6: Final answer
    x = 3,726.10

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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.