Home / 2,921.39-4,031.29-1,662.65

Finding the Fourth Proportional to 2,921.39, 4,031.29 and 1,662.65

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Solution

The fourth proportional to 2,921.39, 4,031.29 and 1,662.65 is: 2,294.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.39 : 4,031.29 = 1,662.65 : x
  2. Step 2: Convert to fraction form
    2,921.39/4,031.29 = 1,662.65/x
  3. Step 3: Cross multiply
    2,921.39x = 4,031.29 × 1,662.65
  4. Step 4: Simplify right side
    2,921.39x = 6,702,624.32
  5. Step 5: Solve for x
    x = 6,702,624.32/2,921.39
  6. Step 6: Final answer
    x = 2,294.33

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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.