Home / 3,103.06-4,284.18-2,158.60

Finding the Fourth Proportional to 3,103.06, 4,284.18 and 2,158.60

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Solution

The fourth proportional to 3,103.06, 4,284.18 and 2,158.60 is: 2,980.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.06 : 4,284.18 = 2,158.60 : x
  2. Step 2: Convert to fraction form
    3,103.06/4,284.18 = 2,158.60/x
  3. Step 3: Cross multiply
    3,103.06x = 4,284.18 × 2,158.60
  4. Step 4: Simplify right side
    3,103.06x = 9,247,830.95
  5. Step 5: Solve for x
    x = 9,247,830.95/3,103.06
  6. Step 6: Final answer
    x = 2,980.23

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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.