Home / 2,921.15-4,031.60-1,661.96

Finding the Fourth Proportional to 2,921.15, 4,031.60 and 1,661.96

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Solution

The fourth proportional to 2,921.15, 4,031.60 and 1,661.96 is: 2,293.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.15 : 4,031.60 = 1,661.96 : x
  2. Step 2: Convert to fraction form
    2,921.15/4,031.60 = 1,661.96/x
  3. Step 3: Cross multiply
    2,921.15x = 4,031.60 × 1,661.96
  4. Step 4: Simplify right side
    2,921.15x = 6,700,329.47
  5. Step 5: Solve for x
    x = 6,700,329.47/2,921.15
  6. Step 6: Final answer
    x = 2,293.73

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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.