Home / 3,144.90-4,340.05-1,728.63

Finding the Fourth Proportional to 3,144.90, 4,340.05 and 1,728.63

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Solution

The fourth proportional to 3,144.90, 4,340.05 and 1,728.63 is: 2,385.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,144.90 : 4,340.05 = 1,728.63 : x
  2. Step 2: Convert to fraction form
    3,144.90/4,340.05 = 1,728.63/x
  3. Step 3: Cross multiply
    3,144.90x = 4,340.05 × 1,728.63
  4. Step 4: Simplify right side
    3,144.90x = 7,502,340.63
  5. Step 5: Solve for x
    x = 7,502,340.63/3,144.90
  6. Step 6: Final answer
    x = 2,385.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.