Home / 2,201.13-3,036.90-1,990.65

Finding the Fourth Proportional to 2,201.13, 3,036.90 and 1,990.65

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Solution

The fourth proportional to 2,201.13, 3,036.90 and 1,990.65 is: 2,746.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,201.13 : 3,036.90 = 1,990.65 : x
  2. Step 2: Convert to fraction form
    2,201.13/3,036.90 = 1,990.65/x
  3. Step 3: Cross multiply
    2,201.13x = 3,036.90 × 1,990.65
  4. Step 4: Simplify right side
    2,201.13x = 6,045,404.99
  5. Step 5: Solve for x
    x = 6,045,404.99/2,201.13
  6. Step 6: Final answer
    x = 2,746.50

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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.