Home / 5,205.45-7,808.85-2,574.30

Finding the Fourth Proportional to 5,205.45, 7,808.85 and 2,574.30

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Solution

The fourth proportional to 5,205.45, 7,808.85 and 2,574.30 is: 3,861.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.45 : 7,808.85 = 2,574.30 : x
  2. Step 2: Convert to fraction form
    5,205.45/7,808.85 = 2,574.30/x
  3. Step 3: Cross multiply
    5,205.45x = 7,808.85 × 2,574.30
  4. Step 4: Simplify right side
    5,205.45x = 20,102,322.56
  5. Step 5: Solve for x
    x = 20,102,322.56/5,205.45
  6. Step 6: Final answer
    x = 3,861.78

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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.