Home / 1,947.45-2,922.66-1,428.84

Finding the Fourth Proportional to 1,947.45, 2,922.66 and 1,428.84

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Solution

The fourth proportional to 1,947.45, 2,922.66 and 1,428.84 is: 2,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.45 : 2,922.66 = 1,428.84 : x
  2. Step 2: Convert to fraction form
    1,947.45/2,922.66 = 1,428.84/x
  3. Step 3: Cross multiply
    1,947.45x = 2,922.66 × 1,428.84
  4. Step 4: Simplify right side
    1,947.45x = 4,176,013.51
  5. Step 5: Solve for x
    x = 4,176,013.51/1,947.45
  6. Step 6: Final answer
    x = 2,144.35

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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.