Home / 1,298.22-1,947.30-1,081.92

Finding the Fourth Proportional to 1,298.22, 1,947.30 and 1,081.92

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Solution

The fourth proportional to 1,298.22, 1,947.30 and 1,081.92 is: 1,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.22 : 1,947.30 = 1,081.92 : x
  2. Step 2: Convert to fraction form
    1,298.22/1,947.30 = 1,081.92/x
  3. Step 3: Cross multiply
    1,298.22x = 1,947.30 × 1,081.92
  4. Step 4: Simplify right side
    1,298.22x = 2,106,822.82
  5. Step 5: Solve for x
    x = 2,106,822.82/1,298.22
  6. Step 6: Final answer
    x = 1,622.85

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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.