Home / 3,688.79-5,089.57-2,196.05

Finding the Fourth Proportional to 3,688.79, 5,089.57 and 2,196.05

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Solution

The fourth proportional to 3,688.79, 5,089.57 and 2,196.05 is: 3,029.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.79 : 5,089.57 = 2,196.05 : x
  2. Step 2: Convert to fraction form
    3,688.79/5,089.57 = 2,196.05/x
  3. Step 3: Cross multiply
    3,688.79x = 5,089.57 × 2,196.05
  4. Step 4: Simplify right side
    3,688.79x = 11,176,919.26
  5. Step 5: Solve for x
    x = 11,176,919.26/3,688.79
  6. Step 6: Final answer
    x = 3,029.97

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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.