Home / 3,685.80-5,528.70-1,837.20

Finding the Fourth Proportional to 3,685.80, 5,528.70 and 1,837.20

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Solution

The fourth proportional to 3,685.80, 5,528.70 and 1,837.20 is: 2,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.80 : 5,528.70 = 1,837.20 : x
  2. Step 2: Convert to fraction form
    3,685.80/5,528.70 = 1,837.20/x
  3. Step 3: Cross multiply
    3,685.80x = 5,528.70 × 1,837.20
  4. Step 4: Simplify right side
    3,685.80x = 10,157,327.64
  5. Step 5: Solve for x
    x = 10,157,327.64/3,685.80
  6. Step 6: Final answer
    x = 2,755.80

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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.