Home / 5,311.36-7,968.19-1,613.87

Finding the Fourth Proportional to 5,311.36, 7,968.19 and 1,613.87

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Solution

The fourth proportional to 5,311.36, 7,968.19 and 1,613.87 is: 2,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.36 : 7,968.19 = 1,613.87 : x
  2. Step 2: Convert to fraction form
    5,311.36/7,968.19 = 1,613.87/x
  3. Step 3: Cross multiply
    5,311.36x = 7,968.19 × 1,613.87
  4. Step 4: Simplify right side
    5,311.36x = 12,859,656.65
  5. Step 5: Solve for x
    x = 12,859,656.65/5,311.36
  6. Step 6: Final answer
    x = 2,421.16

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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.