Home / 2,921.71-4,027.16-2,071.25

Finding the Fourth Proportional to 2,921.71, 4,027.16 and 2,071.25

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Solution

The fourth proportional to 2,921.71, 4,027.16 and 2,071.25 is: 2,854.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.71 : 4,027.16 = 2,071.25 : x
  2. Step 2: Convert to fraction form
    2,921.71/4,027.16 = 2,071.25/x
  3. Step 3: Cross multiply
    2,921.71x = 4,027.16 × 2,071.25
  4. Step 4: Simplify right side
    2,921.71x = 8,341,224.66
  5. Step 5: Solve for x
    x = 8,341,224.66/2,921.71
  6. Step 6: Final answer
    x = 2,854.91

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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.