Home / 5,160.69-7,121.75-3,064.81

Finding the Fourth Proportional to 5,160.69, 7,121.75 and 3,064.81

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Solution

The fourth proportional to 5,160.69, 7,121.75 and 3,064.81 is: 4,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.69 : 7,121.75 = 3,064.81 : x
  2. Step 2: Convert to fraction form
    5,160.69/7,121.75 = 3,064.81/x
  3. Step 3: Cross multiply
    5,160.69x = 7,121.75 × 3,064.81
  4. Step 4: Simplify right side
    5,160.69x = 21,826,810.62
  5. Step 5: Solve for x
    x = 21,826,810.62/5,160.69
  6. Step 6: Final answer
    x = 4,229.44

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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.