Home / 4,939.60-6,817.29-2,815.90

Finding the Fourth Proportional to 4,939.60, 6,817.29 and 2,815.90

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Solution

The fourth proportional to 4,939.60, 6,817.29 and 2,815.90 is: 3,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.60 : 6,817.29 = 2,815.90 : x
  2. Step 2: Convert to fraction form
    4,939.60/6,817.29 = 2,815.90/x
  3. Step 3: Cross multiply
    4,939.60x = 6,817.29 × 2,815.90
  4. Step 4: Simplify right side
    4,939.60x = 19,196,806.91
  5. Step 5: Solve for x
    x = 19,196,806.91/4,939.60
  6. Step 6: Final answer
    x = 3,886.31

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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.