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Finding the Fourth Proportional to 3,066.78, 4,600.32 and 875.83

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Solution

The fourth proportional to 3,066.78, 4,600.32 and 875.83 is: 1,313.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,066.78 : 4,600.32 = 875.83 : x
  2. Step 2: Convert to fraction form
    3,066.78/4,600.32 = 875.83/x
  3. Step 3: Cross multiply
    3,066.78x = 4,600.32 × 875.83
  4. Step 4: Simplify right side
    3,066.78x = 4,029,098.27
  5. Step 5: Solve for x
    x = 4,029,098.27/3,066.78
  6. Step 6: Final answer
    x = 1,313.79

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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.