Home / 3,478.39-5,214.83-1,722.15

Finding the Fourth Proportional to 3,478.39, 5,214.83 and 1,722.15

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Solution

The fourth proportional to 3,478.39, 5,214.83 and 1,722.15 is: 2,581.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.39 : 5,214.83 = 1,722.15 : x
  2. Step 2: Convert to fraction form
    3,478.39/5,214.83 = 1,722.15/x
  3. Step 3: Cross multiply
    3,478.39x = 5,214.83 × 1,722.15
  4. Step 4: Simplify right side
    3,478.39x = 8,980,710.87
  5. Step 5: Solve for x
    x = 8,980,710.87/3,478.39
  6. Step 6: Final answer
    x = 2,581.86

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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.