Home / 7,021.36-10,531.20-2,090.96

Finding the Fourth Proportional to 7,021.36, 10,531.20 and 2,090.96

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Solution

The fourth proportional to 7,021.36, 10,531.20 and 2,090.96 is: 3,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.36 : 10,531.20 = 2,090.96 : x
  2. Step 2: Convert to fraction form
    7,021.36/10,531.20 = 2,090.96/x
  3. Step 3: Cross multiply
    7,021.36x = 10,531.20 × 2,090.96
  4. Step 4: Simplify right side
    7,021.36x = 22,020,317.95
  5. Step 5: Solve for x
    x = 22,020,317.95/7,021.36
  6. Step 6: Final answer
    x = 3,136.19

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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.