Home / 1,721.02-2,578.95-1,330.43

Finding the Fourth Proportional to 1,721.02, 2,578.95 and 1,330.43

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Solution

The fourth proportional to 1,721.02, 2,578.95 and 1,330.43 is: 1,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.02 : 2,578.95 = 1,330.43 : x
  2. Step 2: Convert to fraction form
    1,721.02/2,578.95 = 1,330.43/x
  3. Step 3: Cross multiply
    1,721.02x = 2,578.95 × 1,330.43
  4. Step 4: Simplify right side
    1,721.02x = 3,431,112.45
  5. Step 5: Solve for x
    x = 3,431,112.45/1,721.02
  6. Step 6: Final answer
    x = 1,993.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.