Home / 1,868.21-2,802.41-481.55

Finding the Fourth Proportional to 1,868.21, 2,802.41 and 481.55

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Solution

The fourth proportional to 1,868.21, 2,802.41 and 481.55 is: 722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.21 : 2,802.41 = 481.55 : x
  2. Step 2: Convert to fraction form
    1,868.21/2,802.41 = 481.55/x
  3. Step 3: Cross multiply
    1,868.21x = 2,802.41 × 481.55
  4. Step 4: Simplify right side
    1,868.21x = 1,349,500.54
  5. Step 5: Solve for x
    x = 1,349,500.54/1,868.21
  6. Step 6: Final answer
    x = 722.35

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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.