Home / 7,021.31-10,531.89-2,090.99

Finding the Fourth Proportional to 7,021.31, 10,531.89 and 2,090.99

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Solution

The fourth proportional to 7,021.31, 10,531.89 and 2,090.99 is: 3,136.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.31 : 10,531.89 = 2,090.99 : x
  2. Step 2: Convert to fraction form
    7,021.31/10,531.89 = 2,090.99/x
  3. Step 3: Cross multiply
    7,021.31x = 10,531.89 × 2,090.99
  4. Step 4: Simplify right side
    7,021.31x = 22,022,103.00
  5. Step 5: Solve for x
    x = 22,022,103.00/7,021.31
  6. Step 6: Final answer
    x = 3,136.47

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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.