Home / 9,140.37-12,613.92-5,161.26

Finding the Fourth Proportional to 9,140.37, 12,613.92 and 5,161.26

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Solution

The fourth proportional to 9,140.37, 12,613.92 and 5,161.26 is: 7,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.37 : 12,613.92 = 5,161.26 : x
  2. Step 2: Convert to fraction form
    9,140.37/12,613.92 = 5,161.26/x
  3. Step 3: Cross multiply
    9,140.37x = 12,613.92 × 5,161.26
  4. Step 4: Simplify right side
    9,140.37x = 65,103,720.74
  5. Step 5: Solve for x
    x = 65,103,720.74/9,140.37
  6. Step 6: Final answer
    x = 7,122.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.