Home / 5,317.09-7,975.02-1,421.80

Finding the Fourth Proportional to 5,317.09, 7,975.02 and 1,421.80

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Solution

The fourth proportional to 5,317.09, 7,975.02 and 1,421.80 is: 2,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.09 : 7,975.02 = 1,421.80 : x
  2. Step 2: Convert to fraction form
    5,317.09/7,975.02 = 1,421.80/x
  3. Step 3: Cross multiply
    5,317.09x = 7,975.02 × 1,421.80
  4. Step 4: Simplify right side
    5,317.09x = 11,338,843.56
  5. Step 5: Solve for x
    x = 11,338,843.56/5,317.09
  6. Step 6: Final answer
    x = 2,132.53

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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.