Home / 5,160.23-7,121.12-2,802.38

Finding the Fourth Proportional to 5,160.23, 7,121.12 and 2,802.38

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Solution

The fourth proportional to 5,160.23, 7,121.12 and 2,802.38 is: 3,867.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.23 : 7,121.12 = 2,802.38 : x
  2. Step 2: Convert to fraction form
    5,160.23/7,121.12 = 2,802.38/x
  3. Step 3: Cross multiply
    5,160.23x = 7,121.12 × 2,802.38
  4. Step 4: Simplify right side
    5,160.23x = 19,956,034.65
  5. Step 5: Solve for x
    x = 19,956,034.65/5,160.23
  6. Step 6: Final answer
    x = 3,867.28

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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.