Home / 5,485.78-8,221.96-2,359.18

Finding the Fourth Proportional to 5,485.78, 8,221.96 and 2,359.18

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Solution

The fourth proportional to 5,485.78, 8,221.96 and 2,359.18 is: 3,535.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.78 : 8,221.96 = 2,359.18 : x
  2. Step 2: Convert to fraction form
    5,485.78/8,221.96 = 2,359.18/x
  3. Step 3: Cross multiply
    5,485.78x = 8,221.96 × 2,359.18
  4. Step 4: Simplify right side
    5,485.78x = 19,397,037.30
  5. Step 5: Solve for x
    x = 19,397,037.30/5,485.78
  6. Step 6: Final answer
    x = 3,535.88

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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.