Home / 2,215.03-3,056.84-1,220.39

Finding the Fourth Proportional to 2,215.03, 3,056.84 and 1,220.39

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Solution

The fourth proportional to 2,215.03, 3,056.84 and 1,220.39 is: 1,684.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.03 : 3,056.84 = 1,220.39 : x
  2. Step 2: Convert to fraction form
    2,215.03/3,056.84 = 1,220.39/x
  3. Step 3: Cross multiply
    2,215.03x = 3,056.84 × 1,220.39
  4. Step 4: Simplify right side
    2,215.03x = 3,730,536.97
  5. Step 5: Solve for x
    x = 3,730,536.97/2,215.03
  6. Step 6: Final answer
    x = 1,684.19

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1.5x scale

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.