Home / 1,647.22-2,272.79-983.94

Finding the Fourth Proportional to 1,647.22, 2,272.79 and 983.94

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Solution

The fourth proportional to 1,647.22, 2,272.79 and 983.94 is: 1,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.22 : 2,272.79 = 983.94 : x
  2. Step 2: Convert to fraction form
    1,647.22/2,272.79 = 983.94/x
  3. Step 3: Cross multiply
    1,647.22x = 2,272.79 × 983.94
  4. Step 4: Simplify right side
    1,647.22x = 2,236,278.39
  5. Step 5: Solve for x
    x = 2,236,278.39/1,647.22
  6. Step 6: Final answer
    x = 1,357.61

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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.