Home / 1,768.05-2,439.97-971.43

Finding the Fourth Proportional to 1,768.05, 2,439.97 and 971.43

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Solution

The fourth proportional to 1,768.05, 2,439.97 and 971.43 is: 1,340.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.05 : 2,439.97 = 971.43 : x
  2. Step 2: Convert to fraction form
    1,768.05/2,439.97 = 971.43/x
  3. Step 3: Cross multiply
    1,768.05x = 2,439.97 × 971.43
  4. Step 4: Simplify right side
    1,768.05x = 2,370,260.06
  5. Step 5: Solve for x
    x = 2,370,260.06/1,768.05
  6. Step 6: Final answer
    x = 1,340.61

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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.