Home / 2,782.20-4,172.34-932.88

Finding the Fourth Proportional to 2,782.20, 4,172.34 and 932.88

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Solution

The fourth proportional to 2,782.20, 4,172.34 and 932.88 is: 1,399.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.20 : 4,172.34 = 932.88 : x
  2. Step 2: Convert to fraction form
    2,782.20/4,172.34 = 932.88/x
  3. Step 3: Cross multiply
    2,782.20x = 4,172.34 × 932.88
  4. Step 4: Simplify right side
    2,782.20x = 3,892,292.54
  5. Step 5: Solve for x
    x = 3,892,292.54/2,782.20
  6. Step 6: Final answer
    x = 1,399.00

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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.