Home / 7,317.78-10,098.66-3,960.66

Finding the Fourth Proportional to 7,317.78, 10,098.66 and 3,960.66

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Solution

The fourth proportional to 7,317.78, 10,098.66 and 3,960.66 is: 5,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,317.78 : 10,098.66 = 3,960.66 : x
  2. Step 2: Convert to fraction form
    7,317.78/10,098.66 = 3,960.66/x
  3. Step 3: Cross multiply
    7,317.78x = 10,098.66 × 3,960.66
  4. Step 4: Simplify right side
    7,317.78x = 39,997,358.72
  5. Step 5: Solve for x
    x = 39,997,358.72/7,317.78
  6. Step 6: Final answer
    x = 5,465.78

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1.5x scale

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.