Home / 4,939.80-6,816.16-2,815.06

Finding the Fourth Proportional to 4,939.80, 6,816.16 and 2,815.06

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Solution

The fourth proportional to 4,939.80, 6,816.16 and 2,815.06 is: 3,884.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.80 : 6,816.16 = 2,815.06 : x
  2. Step 2: Convert to fraction form
    4,939.80/6,816.16 = 2,815.06/x
  3. Step 3: Cross multiply
    4,939.80x = 6,816.16 × 2,815.06
  4. Step 4: Simplify right side
    4,939.80x = 19,187,899.37
  5. Step 5: Solve for x
    x = 19,187,899.37/4,939.80
  6. Step 6: Final answer
    x = 3,884.35

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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.