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Finding the Fourth Proportional to 2,417.34, 3,625.92 and 685.92

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Solution

The fourth proportional to 2,417.34, 3,625.92 and 685.92 is: 1,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.34 : 3,625.92 = 685.92 : x
  2. Step 2: Convert to fraction form
    2,417.34/3,625.92 = 685.92/x
  3. Step 3: Cross multiply
    2,417.34x = 3,625.92 × 685.92
  4. Step 4: Simplify right side
    2,417.34x = 2,487,091.05
  5. Step 5: Solve for x
    x = 2,487,091.05/2,417.34
  6. Step 6: Final answer
    x = 1,028.85

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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.