Home / 3,678.87-5,077.94-2,108.01

Finding the Fourth Proportional to 3,678.87, 5,077.94 and 2,108.01

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Solution

The fourth proportional to 3,678.87, 5,077.94 and 2,108.01 is: 2,909.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.87 : 5,077.94 = 2,108.01 : x
  2. Step 2: Convert to fraction form
    3,678.87/5,077.94 = 2,108.01/x
  3. Step 3: Cross multiply
    3,678.87x = 5,077.94 × 2,108.01
  4. Step 4: Simplify right side
    3,678.87x = 10,704,337.76
  5. Step 5: Solve for x
    x = 10,704,337.76/3,678.87
  6. Step 6: Final answer
    x = 2,909.68

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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.