Home / 5,160.38-7,121.45-2,802.52

Finding the Fourth Proportional to 5,160.38, 7,121.45 and 2,802.52

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Solution

The fourth proportional to 5,160.38, 7,121.45 and 2,802.52 is: 3,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.38 : 7,121.45 = 2,802.52 : x
  2. Step 2: Convert to fraction form
    5,160.38/7,121.45 = 2,802.52/x
  3. Step 3: Cross multiply
    5,160.38x = 7,121.45 × 2,802.52
  4. Step 4: Simplify right side
    5,160.38x = 19,958,006.05
  5. Step 5: Solve for x
    x = 19,958,006.05/5,160.38
  6. Step 6: Final answer
    x = 3,867.55

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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.