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Finding the Fourth Proportional to 3,617.60, 5,425.76 and 1,669.60

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Solution

The fourth proportional to 3,617.60, 5,425.76 and 1,669.60 is: 2,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.60 : 5,425.76 = 1,669.60 : x
  2. Step 2: Convert to fraction form
    3,617.60/5,425.76 = 1,669.60/x
  3. Step 3: Cross multiply
    3,617.60x = 5,425.76 × 1,669.60
  4. Step 4: Simplify right side
    3,617.60x = 9,058,848.90
  5. Step 5: Solve for x
    x = 9,058,848.90/3,617.60
  6. Step 6: Final answer
    x = 2,504.10

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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.