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Finding the Fourth Proportional to 3,608.57, 4,980.05 and 2,015.22

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Solution

The fourth proportional to 3,608.57, 4,980.05 and 2,015.22 is: 2,781.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.57 : 4,980.05 = 2,015.22 : x
  2. Step 2: Convert to fraction form
    3,608.57/4,980.05 = 2,015.22/x
  3. Step 3: Cross multiply
    3,608.57x = 4,980.05 × 2,015.22
  4. Step 4: Simplify right side
    3,608.57x = 10,035,901.40
  5. Step 5: Solve for x
    x = 10,035,901.40/3,608.57
  6. Step 6: Final answer
    x = 2,781.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.