Home / 3,880.31-5,818.19-1,538.39

Finding the Fourth Proportional to 3,880.31, 5,818.19 and 1,538.39

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Solution

The fourth proportional to 3,880.31, 5,818.19 and 1,538.39 is: 2,306.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.31 : 5,818.19 = 1,538.39 : x
  2. Step 2: Convert to fraction form
    3,880.31/5,818.19 = 1,538.39/x
  3. Step 3: Cross multiply
    3,880.31x = 5,818.19 × 1,538.39
  4. Step 4: Simplify right side
    3,880.31x = 8,950,652.17
  5. Step 5: Solve for x
    x = 8,950,652.17/3,880.31
  6. Step 6: Final answer
    x = 2,306.69

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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.