Home / 5,191.88-7,790.36-2,269.76

Finding the Fourth Proportional to 5,191.88, 7,790.36 and 2,269.76

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Solution

The fourth proportional to 5,191.88, 7,790.36 and 2,269.76 is: 3,405.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.88 : 7,790.36 = 2,269.76 : x
  2. Step 2: Convert to fraction form
    5,191.88/7,790.36 = 2,269.76/x
  3. Step 3: Cross multiply
    5,191.88x = 7,790.36 × 2,269.76
  4. Step 4: Simplify right side
    5,191.88x = 17,682,247.51
  5. Step 5: Solve for x
    x = 17,682,247.51/5,191.88
  6. Step 6: Final answer
    x = 3,405.75

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1.5x scale

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.