Home / 1,972.99-2,721.90-1,264.61

Finding the Fourth Proportional to 1,972.99, 2,721.90 and 1,264.61

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Solution

The fourth proportional to 1,972.99, 2,721.90 and 1,264.61 is: 1,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.99 : 2,721.90 = 1,264.61 : x
  2. Step 2: Convert to fraction form
    1,972.99/2,721.90 = 1,264.61/x
  3. Step 3: Cross multiply
    1,972.99x = 2,721.90 × 1,264.61
  4. Step 4: Simplify right side
    1,972.99x = 3,442,153.51
  5. Step 5: Solve for x
    x = 3,442,153.51/1,972.99
  6. Step 6: Final answer
    x = 1,744.64

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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.