Home / 2,217.13-3,059.49-1,222.40

Finding the Fourth Proportional to 2,217.13, 3,059.49 and 1,222.40

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Solution

The fourth proportional to 2,217.13, 3,059.49 and 1,222.40 is: 1,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.13 : 3,059.49 = 1,222.40 : x
  2. Step 2: Convert to fraction form
    2,217.13/3,059.49 = 1,222.40/x
  3. Step 3: Cross multiply
    2,217.13x = 3,059.49 × 1,222.40
  4. Step 4: Simplify right side
    2,217.13x = 3,739,908.72
  5. Step 5: Solve for x
    x = 3,739,908.72/2,217.13
  6. Step 6: Final answer
    x = 1,686.83

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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.