Home / 2,102.22-2,900.93-1,217.85

Finding the Fourth Proportional to 2,102.22, 2,900.93 and 1,217.85

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Solution

The fourth proportional to 2,102.22, 2,900.93 and 1,217.85 is: 1,680.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.22 : 2,900.93 = 1,217.85 : x
  2. Step 2: Convert to fraction form
    2,102.22/2,900.93 = 1,217.85/x
  3. Step 3: Cross multiply
    2,102.22x = 2,900.93 × 1,217.85
  4. Step 4: Simplify right side
    2,102.22x = 3,532,900.65
  5. Step 5: Solve for x
    x = 3,532,900.65/2,102.22
  6. Step 6: Final answer
    x = 1,680.56

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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.