Home / 2,921.45-4,032.27-1,926.90

Finding the Fourth Proportional to 2,921.45, 4,032.27 and 1,926.90

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Solution

The fourth proportional to 2,921.45, 4,032.27 and 1,926.90 is: 2,659.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.45 : 4,032.27 = 1,926.90 : x
  2. Step 2: Convert to fraction form
    2,921.45/4,032.27 = 1,926.90/x
  3. Step 3: Cross multiply
    2,921.45x = 4,032.27 × 1,926.90
  4. Step 4: Simplify right side
    2,921.45x = 7,769,781.06
  5. Step 5: Solve for x
    x = 7,769,781.06/2,921.45
  6. Step 6: Final answer
    x = 2,659.56

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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.