Home / 3,478.01-5,217.75-1,138.05

Finding the Fourth Proportional to 3,478.01, 5,217.75 and 1,138.05

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Solution

The fourth proportional to 3,478.01, 5,217.75 and 1,138.05 is: 1,707.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.01 : 5,217.75 = 1,138.05 : x
  2. Step 2: Convert to fraction form
    3,478.01/5,217.75 = 1,138.05/x
  3. Step 3: Cross multiply
    3,478.01x = 5,217.75 × 1,138.05
  4. Step 4: Simplify right side
    3,478.01x = 5,938,060.39
  5. Step 5: Solve for x
    x = 5,938,060.39/3,478.01
  6. Step 6: Final answer
    x = 1,707.32

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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.