Home / 3,317.15-4,972.78-2,148.05

Finding the Fourth Proportional to 3,317.15, 4,972.78 and 2,148.05

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Solution

The fourth proportional to 3,317.15, 4,972.78 and 2,148.05 is: 3,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.15 : 4,972.78 = 2,148.05 : x
  2. Step 2: Convert to fraction form
    3,317.15/4,972.78 = 2,148.05/x
  3. Step 3: Cross multiply
    3,317.15x = 4,972.78 × 2,148.05
  4. Step 4: Simplify right side
    3,317.15x = 10,681,780.08
  5. Step 5: Solve for x
    x = 10,681,780.08/3,317.15
  6. Step 6: Final answer
    x = 3,220.17

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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.