Home / 2,890.89-3,990.95-2,226.29

Finding the Fourth Proportional to 2,890.89, 3,990.95 and 2,226.29

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Solution

The fourth proportional to 2,890.89, 3,990.95 and 2,226.29 is: 3,073.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.89 : 3,990.95 = 2,226.29 : x
  2. Step 2: Convert to fraction form
    2,890.89/3,990.95 = 2,226.29/x
  3. Step 3: Cross multiply
    2,890.89x = 3,990.95 × 2,226.29
  4. Step 4: Simplify right side
    2,890.89x = 8,884,980.99
  5. Step 5: Solve for x
    x = 8,884,980.99/2,890.89
  6. Step 6: Final answer
    x = 3,073.44

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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.