Home / 2,162.14-2,981.09-1,277.62

Finding the Fourth Proportional to 2,162.14, 2,981.09 and 1,277.62

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Solution

The fourth proportional to 2,162.14, 2,981.09 and 1,277.62 is: 1,761.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.14 : 2,981.09 = 1,277.62 : x
  2. Step 2: Convert to fraction form
    2,162.14/2,981.09 = 1,277.62/x
  3. Step 3: Cross multiply
    2,162.14x = 2,981.09 × 1,277.62
  4. Step 4: Simplify right side
    2,162.14x = 3,808,695.95
  5. Step 5: Solve for x
    x = 3,808,695.95/2,162.14
  6. Step 6: Final answer
    x = 1,761.54

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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.