Home / 3,730.56-5,139-3,140.88

Finding the Fourth Proportional to 3,730.56, 5,139 and 3,140.88

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Solution

The fourth proportional to 3,730.56, 5,139 and 3,140.88 is: 4,326.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.56 : 5,139 = 3,140.88 : x
  2. Step 2: Convert to fraction form
    3,730.56/5,139 = 3,140.88/x
  3. Step 3: Cross multiply
    3,730.56x = 5,139 × 3,140.88
  4. Step 4: Simplify right side
    3,730.56x = 16,140,982.32
  5. Step 5: Solve for x
    x = 16,140,982.32/3,730.56
  6. Step 6: Final answer
    x = 4,326.69

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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.