Home / 2,748.30-4,120.02-1,289.22

Finding the Fourth Proportional to 2,748.30, 4,120.02 and 1,289.22

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Solution

The fourth proportional to 2,748.30, 4,120.02 and 1,289.22 is: 1,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.30 : 4,120.02 = 1,289.22 : x
  2. Step 2: Convert to fraction form
    2,748.30/4,120.02 = 1,289.22/x
  3. Step 3: Cross multiply
    2,748.30x = 4,120.02 × 1,289.22
  4. Step 4: Simplify right side
    2,748.30x = 5,311,612.18
  5. Step 5: Solve for x
    x = 5,311,612.18/2,748.30
  6. Step 6: Final answer
    x = 1,932.69

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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.