Home / 3,719.60-5,579.40-3,136.40

Finding the Fourth Proportional to 3,719.60, 5,579.40 and 3,136.40

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Solution

The fourth proportional to 3,719.60, 5,579.40 and 3,136.40 is: 4,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.60 : 5,579.40 = 3,136.40 : x
  2. Step 2: Convert to fraction form
    3,719.60/5,579.40 = 3,136.40/x
  3. Step 3: Cross multiply
    3,719.60x = 5,579.40 × 3,136.40
  4. Step 4: Simplify right side
    3,719.60x = 17,499,230.16
  5. Step 5: Solve for x
    x = 17,499,230.16/3,719.60
  6. Step 6: Final answer
    x = 4,704.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.