Home / 3,408.80-4,711.92-3,136.64

Finding the Fourth Proportional to 3,408.80, 4,711.92 and 3,136.64

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Solution

The fourth proportional to 3,408.80, 4,711.92 and 3,136.64 is: 4,335.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.80 : 4,711.92 = 3,136.64 : x
  2. Step 2: Convert to fraction form
    3,408.80/4,711.92 = 3,136.64/x
  3. Step 3: Cross multiply
    3,408.80x = 4,711.92 × 3,136.64
  4. Step 4: Simplify right side
    3,408.80x = 14,779,596.75
  5. Step 5: Solve for x
    x = 14,779,596.75/3,408.80
  6. Step 6: Final answer
    x = 4,335.72

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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.