Home / 5,166.28-7,129.47-2,808.43

Finding the Fourth Proportional to 5,166.28, 7,129.47 and 2,808.43

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Solution

The fourth proportional to 5,166.28, 7,129.47 and 2,808.43 is: 3,875.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.28 : 7,129.47 = 2,808.43 : x
  2. Step 2: Convert to fraction form
    5,166.28/7,129.47 = 2,808.43/x
  3. Step 3: Cross multiply
    5,166.28x = 7,129.47 × 2,808.43
  4. Step 4: Simplify right side
    5,166.28x = 20,022,617.43
  5. Step 5: Solve for x
    x = 20,022,617.43/5,166.28
  6. Step 6: Final answer
    x = 3,875.64

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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.