Home / 2,215.67-3,057.60-1,220.93

Finding the Fourth Proportional to 2,215.67, 3,057.60 and 1,220.93

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Solution

The fourth proportional to 2,215.67, 3,057.60 and 1,220.93 is: 1,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.67 : 3,057.60 = 1,220.93 : x
  2. Step 2: Convert to fraction form
    2,215.67/3,057.60 = 1,220.93/x
  3. Step 3: Cross multiply
    2,215.67x = 3,057.60 × 1,220.93
  4. Step 4: Simplify right side
    2,215.67x = 3,733,115.57
  5. Step 5: Solve for x
    x = 3,733,115.57/2,215.67
  6. Step 6: Final answer
    x = 1,684.87

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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.