Home / 2,998.60-4,126.62-2,778.28

Finding the Fourth Proportional to 2,998.60, 4,126.62 and 2,778.28

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Solution

The fourth proportional to 2,998.60, 4,126.62 and 2,778.28 is: 3,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.60 : 4,126.62 = 2,778.28 : x
  2. Step 2: Convert to fraction form
    2,998.60/4,126.62 = 2,778.28/x
  3. Step 3: Cross multiply
    2,998.60x = 4,126.62 × 2,778.28
  4. Step 4: Simplify right side
    2,998.60x = 11,464,905.81
  5. Step 5: Solve for x
    x = 11,464,905.81/2,998.60
  6. Step 6: Final answer
    x = 3,823.42

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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.