Home / 1,989.06-2,963.61-1,877.28

Finding the Fourth Proportional to 1,989.06, 2,963.61 and 1,877.28

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Solution

The fourth proportional to 1,989.06, 2,963.61 and 1,877.28 is: 2,797.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.06 : 2,963.61 = 1,877.28 : x
  2. Step 2: Convert to fraction form
    1,989.06/2,963.61 = 1,877.28/x
  3. Step 3: Cross multiply
    1,989.06x = 2,963.61 × 1,877.28
  4. Step 4: Simplify right side
    1,989.06x = 5,563,523.80
  5. Step 5: Solve for x
    x = 5,563,523.80/1,989.06
  6. Step 6: Final answer
    x = 2,797.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.