Home / 3,145.40-4,716.14-1,064.78

Finding the Fourth Proportional to 3,145.40, 4,716.14 and 1,064.78

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Solution

The fourth proportional to 3,145.40, 4,716.14 and 1,064.78 is: 1,596.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.40 : 4,716.14 = 1,064.78 : x
  2. Step 2: Convert to fraction form
    3,145.40/4,716.14 = 1,064.78/x
  3. Step 3: Cross multiply
    3,145.40x = 4,716.14 × 1,064.78
  4. Step 4: Simplify right side
    3,145.40x = 5,021,651.55
  5. Step 5: Solve for x
    x = 5,021,651.55/3,145.40
  6. Step 6: Final answer
    x = 1,596.51

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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.