Home / 5,107.78-7,048.35-2,869.22

Finding the Fourth Proportional to 5,107.78, 7,048.35 and 2,869.22

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Solution

The fourth proportional to 5,107.78, 7,048.35 and 2,869.22 is: 3,959.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.78 : 7,048.35 = 2,869.22 : x
  2. Step 2: Convert to fraction form
    5,107.78/7,048.35 = 2,869.22/x
  3. Step 3: Cross multiply
    5,107.78x = 7,048.35 × 2,869.22
  4. Step 4: Simplify right side
    5,107.78x = 20,223,284.41
  5. Step 5: Solve for x
    x = 20,223,284.41/5,107.78
  6. Step 6: Final answer
    x = 3,959.31

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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.