Home / 2,218.13-3,061.10-1,223.48

Finding the Fourth Proportional to 2,218.13, 3,061.10 and 1,223.48

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Solution

The fourth proportional to 2,218.13, 3,061.10 and 1,223.48 is: 1,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.13 : 3,061.10 = 1,223.48 : x
  2. Step 2: Convert to fraction form
    2,218.13/3,061.10 = 1,223.48/x
  3. Step 3: Cross multiply
    2,218.13x = 3,061.10 × 1,223.48
  4. Step 4: Simplify right side
    2,218.13x = 3,745,173.21
  5. Step 5: Solve for x
    x = 3,745,173.21/2,218.13
  6. Step 6: Final answer
    x = 1,688.44

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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.