Home / 3,209.52-4,419.60-3,136.80

Finding the Fourth Proportional to 3,209.52, 4,419.60 and 3,136.80

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Solution

The fourth proportional to 3,209.52, 4,419.60 and 3,136.80 is: 4,319.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.52 : 4,419.60 = 3,136.80 : x
  2. Step 2: Convert to fraction form
    3,209.52/4,419.60 = 3,136.80/x
  3. Step 3: Cross multiply
    3,209.52x = 4,419.60 × 3,136.80
  4. Step 4: Simplify right side
    3,209.52x = 13,863,401.28
  5. Step 5: Solve for x
    x = 13,863,401.28/3,209.52
  6. Step 6: Final answer
    x = 4,319.46

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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.