Home / 2,185.92-3,275.28-1,317.60

Finding the Fourth Proportional to 2,185.92, 3,275.28 and 1,317.60

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Solution

The fourth proportional to 2,185.92, 3,275.28 and 1,317.60 is: 1,974.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.92 : 3,275.28 = 1,317.60 : x
  2. Step 2: Convert to fraction form
    2,185.92/3,275.28 = 1,317.60/x
  3. Step 3: Cross multiply
    2,185.92x = 3,275.28 × 1,317.60
  4. Step 4: Simplify right side
    2,185.92x = 4,315,508.93
  5. Step 5: Solve for x
    x = 4,315,508.93/2,185.92
  6. Step 6: Final answer
    x = 1,974.23

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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.