Home / 2,921.57-4,031.66-1,662.68

Finding the Fourth Proportional to 2,921.57, 4,031.66 and 1,662.68

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Solution

The fourth proportional to 2,921.57, 4,031.66 and 1,662.68 is: 2,294.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.57 : 4,031.66 = 1,662.68 : x
  2. Step 2: Convert to fraction form
    2,921.57/4,031.66 = 1,662.68/x
  3. Step 3: Cross multiply
    2,921.57x = 4,031.66 × 1,662.68
  4. Step 4: Simplify right side
    2,921.57x = 6,703,331.98
  5. Step 5: Solve for x
    x = 6,703,331.98/2,921.57
  6. Step 6: Final answer
    x = 2,294.43

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1.5x scale

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.