Home / 2,218.16-3,061.06-1,223.44

Finding the Fourth Proportional to 2,218.16, 3,061.06 and 1,223.44

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Solution

The fourth proportional to 2,218.16, 3,061.06 and 1,223.44 is: 1,688.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.16 : 3,061.06 = 1,223.44 : x
  2. Step 2: Convert to fraction form
    2,218.16/3,061.06 = 1,223.44/x
  3. Step 3: Cross multiply
    2,218.16x = 3,061.06 × 1,223.44
  4. Step 4: Simplify right side
    2,218.16x = 3,745,017.13
  5. Step 5: Solve for x
    x = 3,745,017.13/2,218.16
  6. Step 6: Final answer
    x = 1,688.35

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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.