Home / 5,316.99-7,975.45-1,421.38

Finding the Fourth Proportional to 5,316.99, 7,975.45 and 1,421.38

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Solution

The fourth proportional to 5,316.99, 7,975.45 and 1,421.38 is: 2,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.99 : 7,975.45 = 1,421.38 : x
  2. Step 2: Convert to fraction form
    5,316.99/7,975.45 = 1,421.38/x
  3. Step 3: Cross multiply
    5,316.99x = 7,975.45 × 1,421.38
  4. Step 4: Simplify right side
    5,316.99x = 11,336,145.12
  5. Step 5: Solve for x
    x = 11,336,145.12/5,316.99
  6. Step 6: Final answer
    x = 2,132.06

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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.