Home / 4,920-6,789.66-2,824.32

Finding the Fourth Proportional to 4,920, 6,789.66 and 2,824.32

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Solution

The fourth proportional to 4,920, 6,789.66 and 2,824.32 is: 3,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920 : 6,789.66 = 2,824.32 : x
  2. Step 2: Convert to fraction form
    4,920/6,789.66 = 2,824.32/x
  3. Step 3: Cross multiply
    4,920x = 6,789.66 × 2,824.32
  4. Step 4: Simplify right side
    4,920x = 19,176,172.53
  5. Step 5: Solve for x
    x = 19,176,172.53/4,920
  6. Step 6: Final answer
    x = 3,897.60

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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.