Home / 4,272.87-6,408.07-1,640.19

Finding the Fourth Proportional to 4,272.87, 6,408.07 and 1,640.19

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Solution

The fourth proportional to 4,272.87, 6,408.07 and 1,640.19 is: 2,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,272.87 : 6,408.07 = 1,640.19 : x
  2. Step 2: Convert to fraction form
    4,272.87/6,408.07 = 1,640.19/x
  3. Step 3: Cross multiply
    4,272.87x = 6,408.07 × 1,640.19
  4. Step 4: Simplify right side
    4,272.87x = 10,510,448.23
  5. Step 5: Solve for x
    x = 10,510,448.23/4,272.87
  6. Step 6: Final answer
    x = 2,459.81

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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.