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Finding the Fourth Proportional to 3,661.04, 5,490.74 and 1,684.78

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Solution

The fourth proportional to 3,661.04, 5,490.74 and 1,684.78 is: 2,526.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.04 : 5,490.74 = 1,684.78 : x
  2. Step 2: Convert to fraction form
    3,661.04/5,490.74 = 1,684.78/x
  3. Step 3: Cross multiply
    3,661.04x = 5,490.74 × 1,684.78
  4. Step 4: Simplify right side
    3,661.04x = 9,250,657.27
  5. Step 5: Solve for x
    x = 9,250,657.27/3,661.04
  6. Step 6: Final answer
    x = 2,526.78

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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.