Home / 1,972.16-2,721.58-1,087.94

Finding the Fourth Proportional to 1,972.16, 2,721.58 and 1,087.94

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Solution

The fourth proportional to 1,972.16, 2,721.58 and 1,087.94 is: 1,501.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.16 : 2,721.58 = 1,087.94 : x
  2. Step 2: Convert to fraction form
    1,972.16/2,721.58 = 1,087.94/x
  3. Step 3: Cross multiply
    1,972.16x = 2,721.58 × 1,087.94
  4. Step 4: Simplify right side
    1,972.16x = 2,960,915.75
  5. Step 5: Solve for x
    x = 2,960,915.75/1,972.16
  6. Step 6: Final answer
    x = 1,501.36

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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.