Home / 2,906.37-4,358.79-1,981.75

Finding the Fourth Proportional to 2,906.37, 4,358.79 and 1,981.75

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Solution

The fourth proportional to 2,906.37, 4,358.79 and 1,981.75 is: 2,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906.37 : 4,358.79 = 1,981.75 : x
  2. Step 2: Convert to fraction form
    2,906.37/4,358.79 = 1,981.75/x
  3. Step 3: Cross multiply
    2,906.37x = 4,358.79 × 1,981.75
  4. Step 4: Simplify right side
    2,906.37x = 8,638,032.08
  5. Step 5: Solve for x
    x = 8,638,032.08/2,906.37
  6. Step 6: Final answer
    x = 2,972.10

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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.