Home / 3,585.62-5,378.40-2,123.72

Finding the Fourth Proportional to 3,585.62, 5,378.40 and 2,123.72

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Solution

The fourth proportional to 3,585.62, 5,378.40 and 2,123.72 is: 3,185.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,585.62 : 5,378.40 = 2,123.72 : x
  2. Step 2: Convert to fraction form
    3,585.62/5,378.40 = 2,123.72/x
  3. Step 3: Cross multiply
    3,585.62x = 5,378.40 × 2,123.72
  4. Step 4: Simplify right side
    3,585.62x = 11,422,208.93
  5. Step 5: Solve for x
    x = 11,422,208.93/3,585.62
  6. Step 6: Final answer
    x = 3,185.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.