Home / 4,878.20-6,731.89-2,640.08

Finding the Fourth Proportional to 4,878.20, 6,731.89 and 2,640.08

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Solution

The fourth proportional to 4,878.20, 6,731.89 and 2,640.08 is: 3,643.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.20 : 6,731.89 = 2,640.08 : x
  2. Step 2: Convert to fraction form
    4,878.20/6,731.89 = 2,640.08/x
  3. Step 3: Cross multiply
    4,878.20x = 6,731.89 × 2,640.08
  4. Step 4: Simplify right side
    4,878.20x = 17,772,694.49
  5. Step 5: Solve for x
    x = 17,772,694.49/4,878.20
  6. Step 6: Final answer
    x = 3,643.29

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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.