Home / 5,311.40-7,967.09-1,613.64

Finding the Fourth Proportional to 5,311.40, 7,967.09 and 1,613.64

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Solution

The fourth proportional to 5,311.40, 7,967.09 and 1,613.64 is: 2,420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.40 : 7,967.09 = 1,613.64 : x
  2. Step 2: Convert to fraction form
    5,311.40/7,967.09 = 1,613.64/x
  3. Step 3: Cross multiply
    5,311.40x = 7,967.09 × 1,613.64
  4. Step 4: Simplify right side
    5,311.40x = 12,856,007.04
  5. Step 5: Solve for x
    x = 12,856,007.04/5,311.40
  6. Step 6: Final answer
    x = 2,420.46

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1.5x scale

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.