Home / 9,117.41-12,581.06-5,138.48

Finding the Fourth Proportional to 9,117.41, 12,581.06 and 5,138.48

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Solution

The fourth proportional to 9,117.41, 12,581.06 and 5,138.48 is: 7,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.41 : 12,581.06 = 5,138.48 : x
  2. Step 2: Convert to fraction form
    9,117.41/12,581.06 = 5,138.48/x
  3. Step 3: Cross multiply
    9,117.41x = 12,581.06 × 5,138.48
  4. Step 4: Simplify right side
    9,117.41x = 64,647,530.95
  5. Step 5: Solve for x
    x = 64,647,530.95/9,117.41
  6. Step 6: Final answer
    x = 7,090.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.