Home / 3,019.21-4,163.13-1,898.79

Finding the Fourth Proportional to 3,019.21, 4,163.13 and 1,898.79

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Solution

The fourth proportional to 3,019.21, 4,163.13 and 1,898.79 is: 2,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.21 : 4,163.13 = 1,898.79 : x
  2. Step 2: Convert to fraction form
    3,019.21/4,163.13 = 1,898.79/x
  3. Step 3: Cross multiply
    3,019.21x = 4,163.13 × 1,898.79
  4. Step 4: Simplify right side
    3,019.21x = 7,904,909.61
  5. Step 5: Solve for x
    x = 7,904,909.61/3,019.21
  6. Step 6: Final answer
    x = 2,618.20

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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.