Home / 2,099.68-3,132.45-1,997.60

Finding the Fourth Proportional to 2,099.68, 3,132.45 and 1,997.60

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Solution

The fourth proportional to 2,099.68, 3,132.45 and 1,997.60 is: 2,980.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.68 : 3,132.45 = 1,997.60 : x
  2. Step 2: Convert to fraction form
    2,099.68/3,132.45 = 1,997.60/x
  3. Step 3: Cross multiply
    2,099.68x = 3,132.45 × 1,997.60
  4. Step 4: Simplify right side
    2,099.68x = 6,257,382.12
  5. Step 5: Solve for x
    x = 6,257,382.12/2,099.68
  6. Step 6: Final answer
    x = 2,980.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.