Home / 9,140.15-12,613.14-5,161.64

Finding the Fourth Proportional to 9,140.15, 12,613.14 and 5,161.64

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Solution

The fourth proportional to 9,140.15, 12,613.14 and 5,161.64 is: 7,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.15 : 12,613.14 = 5,161.64 : x
  2. Step 2: Convert to fraction form
    9,140.15/12,613.14 = 5,161.64/x
  3. Step 3: Cross multiply
    9,140.15x = 12,613.14 × 5,161.64
  4. Step 4: Simplify right side
    9,140.15x = 65,104,424.88
  5. Step 5: Solve for x
    x = 65,104,424.88/9,140.15
  6. Step 6: Final answer
    x = 7,122.91

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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.