Home / 4,876.47-7,318.80-2,105.21

Finding the Fourth Proportional to 4,876.47, 7,318.80 and 2,105.21

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Solution

The fourth proportional to 4,876.47, 7,318.80 and 2,105.21 is: 3,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,876.47 : 7,318.80 = 2,105.21 : x
  2. Step 2: Convert to fraction form
    4,876.47/7,318.80 = 2,105.21/x
  3. Step 3: Cross multiply
    4,876.47x = 7,318.80 × 2,105.21
  4. Step 4: Simplify right side
    4,876.47x = 15,407,629.25
  5. Step 5: Solve for x
    x = 15,407,629.25/4,876.47
  6. Step 6: Final answer
    x = 3,159.59

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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.