Home / 2,112.74-3,166.95-1,070.81

Finding the Fourth Proportional to 2,112.74, 3,166.95 and 1,070.81

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Solution

The fourth proportional to 2,112.74, 3,166.95 and 1,070.81 is: 1,605.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.74 : 3,166.95 = 1,070.81 : x
  2. Step 2: Convert to fraction form
    2,112.74/3,166.95 = 1,070.81/x
  3. Step 3: Cross multiply
    2,112.74x = 3,166.95 × 1,070.81
  4. Step 4: Simplify right side
    2,112.74x = 3,391,201.73
  5. Step 5: Solve for x
    x = 3,391,201.73/2,112.74
  6. Step 6: Final answer
    x = 1,605.12

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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.