Home / 3,720.80-5,136.40-2,395.24

Finding the Fourth Proportional to 3,720.80, 5,136.40 and 2,395.24

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Solution

The fourth proportional to 3,720.80, 5,136.40 and 2,395.24 is: 3,306.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.80 : 5,136.40 = 2,395.24 : x
  2. Step 2: Convert to fraction form
    3,720.80/5,136.40 = 2,395.24/x
  3. Step 3: Cross multiply
    3,720.80x = 5,136.40 × 2,395.24
  4. Step 4: Simplify right side
    3,720.80x = 12,302,910.74
  5. Step 5: Solve for x
    x = 12,302,910.74/3,720.80
  6. Step 6: Final answer
    x = 3,306.52

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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.