Home / 3,900.35-5,847.78-1,434.85

Finding the Fourth Proportional to 3,900.35, 5,847.78 and 1,434.85

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Solution

The fourth proportional to 3,900.35, 5,847.78 and 1,434.85 is: 2,151.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.35 : 5,847.78 = 1,434.85 : x
  2. Step 2: Convert to fraction form
    3,900.35/5,847.78 = 1,434.85/x
  3. Step 3: Cross multiply
    3,900.35x = 5,847.78 × 1,434.85
  4. Step 4: Simplify right side
    3,900.35x = 8,390,672.51
  5. Step 5: Solve for x
    x = 8,390,672.51/3,900.35
  6. Step 6: Final answer
    x = 2,151.26

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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.