Home / 1,921.25-2,881.23-750.95

Finding the Fourth Proportional to 1,921.25, 2,881.23 and 750.95

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Solution

The fourth proportional to 1,921.25, 2,881.23 and 750.95 is: 1,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.25 : 2,881.23 = 750.95 : x
  2. Step 2: Convert to fraction form
    1,921.25/2,881.23 = 750.95/x
  3. Step 3: Cross multiply
    1,921.25x = 2,881.23 × 750.95
  4. Step 4: Simplify right side
    1,921.25x = 2,163,659.67
  5. Step 5: Solve for x
    x = 2,163,659.67/1,921.25
  6. Step 6: Final answer
    x = 1,126.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.