Home / 5,047.80-6,965.29-2,809.39

Finding the Fourth Proportional to 5,047.80, 6,965.29 and 2,809.39

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Solution

The fourth proportional to 5,047.80, 6,965.29 and 2,809.39 is: 3,876.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,047.80 : 6,965.29 = 2,809.39 : x
  2. Step 2: Convert to fraction form
    5,047.80/6,965.29 = 2,809.39/x
  3. Step 3: Cross multiply
    5,047.80x = 6,965.29 × 2,809.39
  4. Step 4: Simplify right side
    5,047.80x = 19,568,216.07
  5. Step 5: Solve for x
    x = 19,568,216.07/5,047.80
  6. Step 6: Final answer
    x = 3,876.58

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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.