Home / 3,478.45-5,217.13-1,138.44

Finding the Fourth Proportional to 3,478.45, 5,217.13 and 1,138.44

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Solution

The fourth proportional to 3,478.45, 5,217.13 and 1,138.44 is: 1,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.45 : 5,217.13 = 1,138.44 : x
  2. Step 2: Convert to fraction form
    3,478.45/5,217.13 = 1,138.44/x
  3. Step 3: Cross multiply
    3,478.45x = 5,217.13 × 1,138.44
  4. Step 4: Simplify right side
    3,478.45x = 5,939,389.48
  5. Step 5: Solve for x
    x = 5,939,389.48/3,478.45
  6. Step 6: Final answer
    x = 1,707.48

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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.