Home / 3,439-4,741.39-2,808.86

Finding the Fourth Proportional to 3,439, 4,741.39 and 2,808.86

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Solution

The fourth proportional to 3,439, 4,741.39 and 2,808.86 is: 3,872.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439 : 4,741.39 = 2,808.86 : x
  2. Step 2: Convert to fraction form
    3,439/4,741.39 = 2,808.86/x
  3. Step 3: Cross multiply
    3,439x = 4,741.39 × 2,808.86
  4. Step 4: Simplify right side
    3,439x = 13,317,900.72
  5. Step 5: Solve for x
    x = 13,317,900.72/3,439
  6. Step 6: Final answer
    x = 3,872.61

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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.