Home / 2,638.80-3,641.40-2,049.84

Finding the Fourth Proportional to 2,638.80, 3,641.40 and 2,049.84

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Solution

The fourth proportional to 2,638.80, 3,641.40 and 2,049.84 is: 2,828.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.80 : 3,641.40 = 2,049.84 : x
  2. Step 2: Convert to fraction form
    2,638.80/3,641.40 = 2,049.84/x
  3. Step 3: Cross multiply
    2,638.80x = 3,641.40 × 2,049.84
  4. Step 4: Simplify right side
    2,638.80x = 7,464,287.38
  5. Step 5: Solve for x
    x = 7,464,287.38/2,638.80
  6. Step 6: Final answer
    x = 2,828.67

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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.