Home / 5,475.78-8,219.82-2,191.19

Finding the Fourth Proportional to 5,475.78, 8,219.82 and 2,191.19

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Solution

The fourth proportional to 5,475.78, 8,219.82 and 2,191.19 is: 3,289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.78 : 8,219.82 = 2,191.19 : x
  2. Step 2: Convert to fraction form
    5,475.78/8,219.82 = 2,191.19/x
  3. Step 3: Cross multiply
    5,475.78x = 8,219.82 × 2,191.19
  4. Step 4: Simplify right side
    5,475.78x = 18,011,146.29
  5. Step 5: Solve for x
    x = 18,011,146.29/5,475.78
  6. Step 6: Final answer
    x = 3,289.24

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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.