Home / 2,193.17-3,289.78-1,225.43

Finding the Fourth Proportional to 2,193.17, 3,289.78 and 1,225.43

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Solution

The fourth proportional to 2,193.17, 3,289.78 and 1,225.43 is: 1,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.17 : 3,289.78 = 1,225.43 : x
  2. Step 2: Convert to fraction form
    2,193.17/3,289.78 = 1,225.43/x
  3. Step 3: Cross multiply
    2,193.17x = 3,289.78 × 1,225.43
  4. Step 4: Simplify right side
    2,193.17x = 4,031,395.11
  5. Step 5: Solve for x
    x = 4,031,395.11/2,193.17
  6. Step 6: Final answer
    x = 1,838.16

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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.