Home / 3,810.60-5,715.89-1,213.53

Finding the Fourth Proportional to 3,810.60, 5,715.89 and 1,213.53

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Solution

The fourth proportional to 3,810.60, 5,715.89 and 1,213.53 is: 1,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.60 : 5,715.89 = 1,213.53 : x
  2. Step 2: Convert to fraction form
    3,810.60/5,715.89 = 1,213.53/x
  3. Step 3: Cross multiply
    3,810.60x = 5,715.89 × 1,213.53
  4. Step 4: Simplify right side
    3,810.60x = 6,936,403.99
  5. Step 5: Solve for x
    x = 6,936,403.99/3,810.60
  6. Step 6: Final answer
    x = 1,820.29

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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.