Home / 2,917.22-4,370.66-1,989.77

Finding the Fourth Proportional to 2,917.22, 4,370.66 and 1,989.77

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Solution

The fourth proportional to 2,917.22, 4,370.66 and 1,989.77 is: 2,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.22 : 4,370.66 = 1,989.77 : x
  2. Step 2: Convert to fraction form
    2,917.22/4,370.66 = 1,989.77/x
  3. Step 3: Cross multiply
    2,917.22x = 4,370.66 × 1,989.77
  4. Step 4: Simplify right side
    2,917.22x = 8,696,583.81
  5. Step 5: Solve for x
    x = 8,696,583.81/2,917.22
  6. Step 6: Final answer
    x = 2,981.13

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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.