Home / 1,972.17-2,721.60-1,087.95

Finding the Fourth Proportional to 1,972.17, 2,721.60 and 1,087.95

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Solution

The fourth proportional to 1,972.17, 2,721.60 and 1,087.95 is: 1,501.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.17 : 2,721.60 = 1,087.95 : x
  2. Step 2: Convert to fraction form
    1,972.17/2,721.60 = 1,087.95/x
  3. Step 3: Cross multiply
    1,972.17x = 2,721.60 × 1,087.95
  4. Step 4: Simplify right side
    1,972.17x = 2,960,964.72
  5. Step 5: Solve for x
    x = 2,960,964.72/1,972.17
  6. Step 6: Final answer
    x = 1,501.37

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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.