Home / 2,890.22-3,990.39-2,225.84

Finding the Fourth Proportional to 2,890.22, 3,990.39 and 2,225.84

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Solution

The fourth proportional to 2,890.22, 3,990.39 and 2,225.84 is: 3,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.22 : 3,990.39 = 2,225.84 : x
  2. Step 2: Convert to fraction form
    2,890.22/3,990.39 = 2,225.84/x
  3. Step 3: Cross multiply
    2,890.22x = 3,990.39 × 2,225.84
  4. Step 4: Simplify right side
    2,890.22x = 8,881,969.68
  5. Step 5: Solve for x
    x = 8,881,969.68/2,890.22
  6. Step 6: Final answer
    x = 3,073.11

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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.