Home / 7,121.36-10,683.87-5,122.36

Finding the Fourth Proportional to 7,121.36, 10,683.87 and 5,122.36

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Solution

The fourth proportional to 7,121.36, 10,683.87 and 5,122.36 is: 7,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.36 : 10,683.87 = 5,122.36 : x
  2. Step 2: Convert to fraction form
    7,121.36/10,683.87 = 5,122.36/x
  3. Step 3: Cross multiply
    7,121.36x = 10,683.87 × 5,122.36
  4. Step 4: Simplify right side
    7,121.36x = 54,726,574.91
  5. Step 5: Solve for x
    x = 54,726,574.91/7,121.36
  6. Step 6: Final answer
    x = 7,684.85

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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.