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Finding the Fourth Proportional to 2,617.16, 3,925.65 and 669.38

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Solution

The fourth proportional to 2,617.16, 3,925.65 and 669.38 is: 1,004.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.16 : 3,925.65 = 669.38 : x
  2. Step 2: Convert to fraction form
    2,617.16/3,925.65 = 669.38/x
  3. Step 3: Cross multiply
    2,617.16x = 3,925.65 × 669.38
  4. Step 4: Simplify right side
    2,617.16x = 2,627,751.60
  5. Step 5: Solve for x
    x = 2,627,751.60/2,617.16
  6. Step 6: Final answer
    x = 1,004.05

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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.