Home / 3,162.07-4,362.45-1,981.09

Finding the Fourth Proportional to 3,162.07, 4,362.45 and 1,981.09

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Solution

The fourth proportional to 3,162.07, 4,362.45 and 1,981.09 is: 2,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.07 : 4,362.45 = 1,981.09 : x
  2. Step 2: Convert to fraction form
    3,162.07/4,362.45 = 1,981.09/x
  3. Step 3: Cross multiply
    3,162.07x = 4,362.45 × 1,981.09
  4. Step 4: Simplify right side
    3,162.07x = 8,642,406.07
  5. Step 5: Solve for x
    x = 8,642,406.07/3,162.07
  6. Step 6: Final answer
    x = 2,733.15

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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.