Home / 3,242.40-4,863.78-1,021.55

Finding the Fourth Proportional to 3,242.40, 4,863.78 and 1,021.55

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Solution

The fourth proportional to 3,242.40, 4,863.78 and 1,021.55 is: 1,532.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,242.40 : 4,863.78 = 1,021.55 : x
  2. Step 2: Convert to fraction form
    3,242.40/4,863.78 = 1,021.55/x
  3. Step 3: Cross multiply
    3,242.40x = 4,863.78 × 1,021.55
  4. Step 4: Simplify right side
    3,242.40x = 4,968,570.14
  5. Step 5: Solve for x
    x = 4,968,570.14/3,242.40
  6. Step 6: Final answer
    x = 1,532.38

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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.