Home / 5,420.67-8,131.29-1,525.38

Finding the Fourth Proportional to 5,420.67, 8,131.29 and 1,525.38

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Solution

The fourth proportional to 5,420.67, 8,131.29 and 1,525.38 is: 2,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.67 : 8,131.29 = 1,525.38 : x
  2. Step 2: Convert to fraction form
    5,420.67/8,131.29 = 1,525.38/x
  3. Step 3: Cross multiply
    5,420.67x = 8,131.29 × 1,525.38
  4. Step 4: Simplify right side
    5,420.67x = 12,403,307.14
  5. Step 5: Solve for x
    x = 12,403,307.14/5,420.67
  6. Step 6: Final answer
    x = 2,288.15

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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.