Home / 3,725.76-5,136-2,399.20

Finding the Fourth Proportional to 3,725.76, 5,136 and 2,399.20

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Solution

The fourth proportional to 3,725.76, 5,136 and 2,399.20 is: 3,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.76 : 5,136 = 2,399.20 : x
  2. Step 2: Convert to fraction form
    3,725.76/5,136 = 2,399.20/x
  3. Step 3: Cross multiply
    3,725.76x = 5,136 × 2,399.20
  4. Step 4: Simplify right side
    3,725.76x = 12,322,291.20
  5. Step 5: Solve for x
    x = 12,322,291.20/3,725.76
  6. Step 6: Final answer
    x = 3,307.32

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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.