Home / 5,187.10-7,781.16-2,066.38

Finding the Fourth Proportional to 5,187.10, 7,781.16 and 2,066.38

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Solution

The fourth proportional to 5,187.10, 7,781.16 and 2,066.38 is: 3,099.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.10 : 7,781.16 = 2,066.38 : x
  2. Step 2: Convert to fraction form
    5,187.10/7,781.16 = 2,066.38/x
  3. Step 3: Cross multiply
    5,187.10x = 7,781.16 × 2,066.38
  4. Step 4: Simplify right side
    5,187.10x = 16,078,833.40
  5. Step 5: Solve for x
    x = 16,078,833.40/5,187.10
  6. Step 6: Final answer
    x = 3,099.77

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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.