Home / 1,945.20-2,910.60-1,772.40

Finding the Fourth Proportional to 1,945.20, 2,910.60 and 1,772.40

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Solution

The fourth proportional to 1,945.20, 2,910.60 and 1,772.40 is: 2,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.20 : 2,910.60 = 1,772.40 : x
  2. Step 2: Convert to fraction form
    1,945.20/2,910.60 = 1,772.40/x
  3. Step 3: Cross multiply
    1,945.20x = 2,910.60 × 1,772.40
  4. Step 4: Simplify right side
    1,945.20x = 5,158,747.44
  5. Step 5: Solve for x
    x = 5,158,747.44/1,945.20
  6. Step 6: Final answer
    x = 2,652.04

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1.5x scale

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.