Home / 5,475.39-8,217.05-2,189.40

Finding the Fourth Proportional to 5,475.39, 8,217.05 and 2,189.40

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Solution

The fourth proportional to 5,475.39, 8,217.05 and 2,189.40 is: 3,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.39 : 8,217.05 = 2,189.40 : x
  2. Step 2: Convert to fraction form
    5,475.39/8,217.05 = 2,189.40/x
  3. Step 3: Cross multiply
    5,475.39x = 8,217.05 × 2,189.40
  4. Step 4: Simplify right side
    5,475.39x = 17,990,398.32
  5. Step 5: Solve for x
    x = 17,990,398.32/5,475.39
  6. Step 6: Final answer
    x = 3,285.68

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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.