Home / 3,391.40-5,074.74-2,800.91

Finding the Fourth Proportional to 3,391.40, 5,074.74 and 2,800.91

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Solution

The fourth proportional to 3,391.40, 5,074.74 and 2,800.91 is: 4,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.40 : 5,074.74 = 2,800.91 : x
  2. Step 2: Convert to fraction form
    3,391.40/5,074.74 = 2,800.91/x
  3. Step 3: Cross multiply
    3,391.40x = 5,074.74 × 2,800.91
  4. Step 4: Simplify right side
    3,391.40x = 14,213,890.01
  5. Step 5: Solve for x
    x = 14,213,890.01/3,391.40
  6. Step 6: Final answer
    x = 4,191.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.