Home / 3,619.15-5,429.12-1,153.10

Finding the Fourth Proportional to 3,619.15, 5,429.12 and 1,153.10

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Solution

The fourth proportional to 3,619.15, 5,429.12 and 1,153.10 is: 1,729.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.15 : 5,429.12 = 1,153.10 : x
  2. Step 2: Convert to fraction form
    3,619.15/5,429.12 = 1,153.10/x
  3. Step 3: Cross multiply
    3,619.15x = 5,429.12 × 1,153.10
  4. Step 4: Simplify right side
    3,619.15x = 6,260,318.27
  5. Step 5: Solve for x
    x = 6,260,318.27/3,619.15
  6. Step 6: Final answer
    x = 1,729.78

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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.