Home / 1,947.15-2,920.73-1,072.35

Finding the Fourth Proportional to 1,947.15, 2,920.73 and 1,072.35

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Solution

The fourth proportional to 1,947.15, 2,920.73 and 1,072.35 is: 1,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.15 : 2,920.73 = 1,072.35 : x
  2. Step 2: Convert to fraction form
    1,947.15/2,920.73 = 1,072.35/x
  3. Step 3: Cross multiply
    1,947.15x = 2,920.73 × 1,072.35
  4. Step 4: Simplify right side
    1,947.15x = 3,132,039.45
  5. Step 5: Solve for x
    x = 3,132,039.45/1,947.15
  6. Step 6: Final answer
    x = 1,608.53

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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.