Home / 3,888.34-5,358.72-2,769.37

Finding the Fourth Proportional to 3,888.34, 5,358.72 and 2,769.37

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Solution

The fourth proportional to 3,888.34, 5,358.72 and 2,769.37 is: 3,816.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.34 : 5,358.72 = 2,769.37 : x
  2. Step 2: Convert to fraction form
    3,888.34/5,358.72 = 2,769.37/x
  3. Step 3: Cross multiply
    3,888.34x = 5,358.72 × 2,769.37
  4. Step 4: Simplify right side
    3,888.34x = 14,840,278.41
  5. Step 5: Solve for x
    x = 14,840,278.41/3,888.34
  6. Step 6: Final answer
    x = 3,816.61

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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.