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Finding the Fourth Proportional to 3,851.99, 5,316.02 and 2,906.12

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Solution

The fourth proportional to 3,851.99, 5,316.02 and 2,906.12 is: 4,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.99 : 5,316.02 = 2,906.12 : x
  2. Step 2: Convert to fraction form
    3,851.99/5,316.02 = 2,906.12/x
  3. Step 3: Cross multiply
    3,851.99x = 5,316.02 × 2,906.12
  4. Step 4: Simplify right side
    3,851.99x = 15,448,977.51
  5. Step 5: Solve for x
    x = 15,448,977.51/3,851.99
  6. Step 6: Final answer
    x = 4,010.65

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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.