Home / 1,868.12-2,802.41-635.43

Finding the Fourth Proportional to 1,868.12, 2,802.41 and 635.43

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Solution

The fourth proportional to 1,868.12, 2,802.41 and 635.43 is: 953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.12 : 2,802.41 = 635.43 : x
  2. Step 2: Convert to fraction form
    1,868.12/2,802.41 = 635.43/x
  3. Step 3: Cross multiply
    1,868.12x = 2,802.41 × 635.43
  4. Step 4: Simplify right side
    1,868.12x = 1,780,735.39
  5. Step 5: Solve for x
    x = 1,780,735.39/1,868.12
  6. Step 6: Final answer
    x = 953.22

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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.