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Finding the Fourth Proportional to 2,468.58, 3,400.24 and 1,721.20

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Solution

The fourth proportional to 2,468.58, 3,400.24 and 1,721.20 is: 2,370.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,468.58 : 3,400.24 = 1,721.20 : x
  2. Step 2: Convert to fraction form
    2,468.58/3,400.24 = 1,721.20/x
  3. Step 3: Cross multiply
    2,468.58x = 3,400.24 × 1,721.20
  4. Step 4: Simplify right side
    2,468.58x = 5,852,493.09
  5. Step 5: Solve for x
    x = 5,852,493.09/2,468.58
  6. Step 6: Final answer
    x = 2,370.79

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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.