Home / 4,939.29-6,816.85-2,815.59

Finding the Fourth Proportional to 4,939.29, 6,816.85 and 2,815.59

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Solution

The fourth proportional to 4,939.29, 6,816.85 and 2,815.59 is: 3,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.29 : 6,816.85 = 2,815.59 : x
  2. Step 2: Convert to fraction form
    4,939.29/6,816.85 = 2,815.59/x
  3. Step 3: Cross multiply
    4,939.29x = 6,816.85 × 2,815.59
  4. Step 4: Simplify right side
    4,939.29x = 19,193,454.69
  5. Step 5: Solve for x
    x = 19,193,454.69/4,939.29
  6. Step 6: Final answer
    x = 3,885.88

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1.5x scale

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.