Home / 1,899.28-2,621.46-1,375.21

Finding the Fourth Proportional to 1,899.28, 2,621.46 and 1,375.21

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Solution

The fourth proportional to 1,899.28, 2,621.46 and 1,375.21 is: 1,898.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.28 : 2,621.46 = 1,375.21 : x
  2. Step 2: Convert to fraction form
    1,899.28/2,621.46 = 1,375.21/x
  3. Step 3: Cross multiply
    1,899.28x = 2,621.46 × 1,375.21
  4. Step 4: Simplify right side
    1,899.28x = 3,605,058.01
  5. Step 5: Solve for x
    x = 3,605,058.01/1,899.28
  6. Step 6: Final answer
    x = 1,898.12

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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.