Home / 1,972.56-2,721.92-1,088.40

Finding the Fourth Proportional to 1,972.56, 2,721.92 and 1,088.40

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Solution

The fourth proportional to 1,972.56, 2,721.92 and 1,088.40 is: 1,501.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.56 : 2,721.92 = 1,088.40 : x
  2. Step 2: Convert to fraction form
    1,972.56/2,721.92 = 1,088.40/x
  3. Step 3: Cross multiply
    1,972.56x = 2,721.92 × 1,088.40
  4. Step 4: Simplify right side
    1,972.56x = 2,962,537.73
  5. Step 5: Solve for x
    x = 2,962,537.73/1,972.56
  6. Step 6: Final answer
    x = 1,501.87

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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.