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Finding the Fourth Proportional to 3,873.70, 5,347.23 and 2,615.50

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Solution

The fourth proportional to 3,873.70, 5,347.23 and 2,615.50 is: 3,610.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.70 : 5,347.23 = 2,615.50 : x
  2. Step 2: Convert to fraction form
    3,873.70/5,347.23 = 2,615.50/x
  3. Step 3: Cross multiply
    3,873.70x = 5,347.23 × 2,615.50
  4. Step 4: Simplify right side
    3,873.70x = 13,985,680.07
  5. Step 5: Solve for x
    x = 13,985,680.07/3,873.70
  6. Step 6: Final answer
    x = 3,610.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.