Home / 1,972.45-2,721.80-1,263.04

Finding the Fourth Proportional to 1,972.45, 2,721.80 and 1,263.04

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Solution

The fourth proportional to 1,972.45, 2,721.80 and 1,263.04 is: 1,742.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.45 : 2,721.80 = 1,263.04 : x
  2. Step 2: Convert to fraction form
    1,972.45/2,721.80 = 1,263.04/x
  3. Step 3: Cross multiply
    1,972.45x = 2,721.80 × 1,263.04
  4. Step 4: Simplify right side
    1,972.45x = 3,437,738.63
  5. Step 5: Solve for x
    x = 3,437,738.63/1,972.45
  6. Step 6: Final answer
    x = 1,742.88

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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.