Home / 2,091.18-3,136.02-629.88

Finding the Fourth Proportional to 2,091.18, 3,136.02 and 629.88

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Solution

The fourth proportional to 2,091.18, 3,136.02 and 629.88 is: 944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.18 : 3,136.02 = 629.88 : x
  2. Step 2: Convert to fraction form
    2,091.18/3,136.02 = 629.88/x
  3. Step 3: Cross multiply
    2,091.18x = 3,136.02 × 629.88
  4. Step 4: Simplify right side
    2,091.18x = 1,975,316.28
  5. Step 5: Solve for x
    x = 1,975,316.28/2,091.18
  6. Step 6: Final answer
    x = 944.59

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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.