Home / 1,947.60-2,921.90-1,022.90

Finding the Fourth Proportional to 1,947.60, 2,921.90 and 1,022.90

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Solution

The fourth proportional to 1,947.60, 2,921.90 and 1,022.90 is: 1,534.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.60 : 2,921.90 = 1,022.90 : x
  2. Step 2: Convert to fraction form
    1,947.60/2,921.90 = 1,022.90/x
  3. Step 3: Cross multiply
    1,947.60x = 2,921.90 × 1,022.90
  4. Step 4: Simplify right side
    1,947.60x = 2,988,811.51
  5. Step 5: Solve for x
    x = 2,988,811.51/1,947.60
  6. Step 6: Final answer
    x = 1,534.61

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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.