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Finding the Fourth Proportional to 3,862.34, 5,788.47 and 1,555.46

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Solution

The fourth proportional to 3,862.34, 5,788.47 and 1,555.46 is: 2,331.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.34 : 5,788.47 = 1,555.46 : x
  2. Step 2: Convert to fraction form
    3,862.34/5,788.47 = 1,555.46/x
  3. Step 3: Cross multiply
    3,862.34x = 5,788.47 × 1,555.46
  4. Step 4: Simplify right side
    3,862.34x = 9,003,733.55
  5. Step 5: Solve for x
    x = 9,003,733.55/3,862.34
  6. Step 6: Final answer
    x = 2,331.16

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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.