Home / 3,586.91-5,380.40-1,478.05

Finding the Fourth Proportional to 3,586.91, 5,380.40 and 1,478.05

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Solution

The fourth proportional to 3,586.91, 5,380.40 and 1,478.05 is: 2,217.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.91 : 5,380.40 = 1,478.05 : x
  2. Step 2: Convert to fraction form
    3,586.91/5,380.40 = 1,478.05/x
  3. Step 3: Cross multiply
    3,586.91x = 5,380.40 × 1,478.05
  4. Step 4: Simplify right side
    3,586.91x = 7,952,486.31
  5. Step 5: Solve for x
    x = 7,952,486.31/3,586.91
  6. Step 6: Final answer
    x = 2,217.09

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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.