Home / 5,121.51-7,066.91-2,883.33

Finding the Fourth Proportional to 5,121.51, 7,066.91 and 2,883.33

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Solution

The fourth proportional to 5,121.51, 7,066.91 and 2,883.33 is: 3,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.51 : 7,066.91 = 2,883.33 : x
  2. Step 2: Convert to fraction form
    5,121.51/7,066.91 = 2,883.33/x
  3. Step 3: Cross multiply
    5,121.51x = 7,066.91 × 2,883.33
  4. Step 4: Simplify right side
    5,121.51x = 20,376,219.19
  5. Step 5: Solve for x
    x = 20,376,219.19/5,121.51
  6. Step 6: Final answer
    x = 3,978.56

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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.