Home / 5,439.69-8,147.68-3,360.21

Finding the Fourth Proportional to 5,439.69, 8,147.68 and 3,360.21

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Solution

The fourth proportional to 5,439.69, 8,147.68 and 3,360.21 is: 5,032.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.69 : 8,147.68 = 3,360.21 : x
  2. Step 2: Convert to fraction form
    5,439.69/8,147.68 = 3,360.21/x
  3. Step 3: Cross multiply
    5,439.69x = 8,147.68 × 3,360.21
  4. Step 4: Simplify right side
    5,439.69x = 27,377,915.81
  5. Step 5: Solve for x
    x = 27,377,915.81/5,439.69
  6. Step 6: Final answer
    x = 5,032.99

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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.