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Finding the Fourth Proportional to 2,617.02, 3,925.47 and 669.21

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Solution

The fourth proportional to 2,617.02, 3,925.47 and 669.21 is: 1,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.02 : 3,925.47 = 669.21 : x
  2. Step 2: Convert to fraction form
    2,617.02/3,925.47 = 669.21/x
  3. Step 3: Cross multiply
    2,617.02x = 3,925.47 × 669.21
  4. Step 4: Simplify right side
    2,617.02x = 2,626,963.78
  5. Step 5: Solve for x
    x = 2,626,963.78/2,617.02
  6. Step 6: Final answer
    x = 1,003.80

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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.