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Finding the Fourth Proportional to 2,580.50, 3,870.84 and 849.26

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Solution

The fourth proportional to 2,580.50, 3,870.84 and 849.26 is: 1,273.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.50 : 3,870.84 = 849.26 : x
  2. Step 2: Convert to fraction form
    2,580.50/3,870.84 = 849.26/x
  3. Step 3: Cross multiply
    2,580.50x = 3,870.84 × 849.26
  4. Step 4: Simplify right side
    2,580.50x = 3,287,349.58
  5. Step 5: Solve for x
    x = 3,287,349.58/2,580.50
  6. Step 6: Final answer
    x = 1,273.92

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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.