Home / 3,709.64-5,122.78-2,385.65

Finding the Fourth Proportional to 3,709.64, 5,122.78 and 2,385.65

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Solution

The fourth proportional to 3,709.64, 5,122.78 and 2,385.65 is: 3,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.64 : 5,122.78 = 2,385.65 : x
  2. Step 2: Convert to fraction form
    3,709.64/5,122.78 = 2,385.65/x
  3. Step 3: Cross multiply
    3,709.64x = 5,122.78 × 2,385.65
  4. Step 4: Simplify right side
    3,709.64x = 12,221,122.56
  5. Step 5: Solve for x
    x = 12,221,122.56/3,709.64
  6. Step 6: Final answer
    x = 3,294.42

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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.