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Finding the Fourth Proportional to 3,891.03, 5,828.77 and 2,655.38

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Solution

The fourth proportional to 3,891.03, 5,828.77 and 2,655.38 is: 3,977.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.03 : 5,828.77 = 2,655.38 : x
  2. Step 2: Convert to fraction form
    3,891.03/5,828.77 = 2,655.38/x
  3. Step 3: Cross multiply
    3,891.03x = 5,828.77 × 2,655.38
  4. Step 4: Simplify right side
    3,891.03x = 15,477,599.28
  5. Step 5: Solve for x
    x = 15,477,599.28/3,891.03
  6. Step 6: Final answer
    x = 3,977.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.