Home / 5,317.21-7,975.21-1,421.92

Finding the Fourth Proportional to 5,317.21, 7,975.21 and 1,421.92

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Solution

The fourth proportional to 5,317.21, 7,975.21 and 1,421.92 is: 2,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.21 : 7,975.21 = 1,421.92 : x
  2. Step 2: Convert to fraction form
    5,317.21/7,975.21 = 1,421.92/x
  3. Step 3: Cross multiply
    5,317.21x = 7,975.21 × 1,421.92
  4. Step 4: Simplify right side
    5,317.21x = 11,340,117.02
  5. Step 5: Solve for x
    x = 11,340,117.02/5,317.21
  6. Step 6: Final answer
    x = 2,132.72

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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.