Home / 2,215.18-3,056.84-1,220.43

Finding the Fourth Proportional to 2,215.18, 3,056.84 and 1,220.43

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Solution

The fourth proportional to 2,215.18, 3,056.84 and 1,220.43 is: 1,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.18 : 3,056.84 = 1,220.43 : x
  2. Step 2: Convert to fraction form
    2,215.18/3,056.84 = 1,220.43/x
  3. Step 3: Cross multiply
    2,215.18x = 3,056.84 × 1,220.43
  4. Step 4: Simplify right side
    2,215.18x = 3,730,659.24
  5. Step 5: Solve for x
    x = 3,730,659.24/2,215.18
  6. Step 6: Final answer
    x = 1,684.13

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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.