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Finding the Fourth Proportional to 3,079.04, 4,620 and 1,781.60

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Solution

The fourth proportional to 3,079.04, 4,620 and 1,781.60 is: 2,673.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.04 : 4,620 = 1,781.60 : x
  2. Step 2: Convert to fraction form
    3,079.04/4,620 = 1,781.60/x
  3. Step 3: Cross multiply
    3,079.04x = 4,620 × 1,781.60
  4. Step 4: Simplify right side
    3,079.04x = 8,230,992
  5. Step 5: Solve for x
    x = 8,230,992/3,079.04
  6. Step 6: Final answer
    x = 2,673.23

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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.