Home / 2,889.96-3,988.55-1,631.52

Finding the Fourth Proportional to 2,889.96, 3,988.55 and 1,631.52

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Solution

The fourth proportional to 2,889.96, 3,988.55 and 1,631.52 is: 2,251.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.96 : 3,988.55 = 1,631.52 : x
  2. Step 2: Convert to fraction form
    2,889.96/3,988.55 = 1,631.52/x
  3. Step 3: Cross multiply
    2,889.96x = 3,988.55 × 1,631.52
  4. Step 4: Simplify right side
    2,889.96x = 6,507,399.10
  5. Step 5: Solve for x
    x = 6,507,399.10/2,889.96
  6. Step 6: Final answer
    x = 2,251.73

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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.