Home / 3,028.60-4,178.10-1,908.76

Finding the Fourth Proportional to 3,028.60, 4,178.10 and 1,908.76

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Solution

The fourth proportional to 3,028.60, 4,178.10 and 1,908.76 is: 2,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.60 : 4,178.10 = 1,908.76 : x
  2. Step 2: Convert to fraction form
    3,028.60/4,178.10 = 1,908.76/x
  3. Step 3: Cross multiply
    3,028.60x = 4,178.10 × 1,908.76
  4. Step 4: Simplify right side
    3,028.60x = 7,974,990.16
  5. Step 5: Solve for x
    x = 7,974,990.16/3,028.60
  6. Step 6: Final answer
    x = 2,633.23

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Half scale
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Double scale
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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.