Home / 9,128.09-12,596.47-5,149.14

Finding the Fourth Proportional to 9,128.09, 12,596.47 and 5,149.14

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Solution

The fourth proportional to 9,128.09, 12,596.47 and 5,149.14 is: 7,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.09 : 12,596.47 = 5,149.14 : x
  2. Step 2: Convert to fraction form
    9,128.09/12,596.47 = 5,149.14/x
  3. Step 3: Cross multiply
    9,128.09x = 12,596.47 × 5,149.14
  4. Step 4: Simplify right side
    9,128.09x = 64,860,961.79
  5. Step 5: Solve for x
    x = 64,860,961.79/9,128.09
  6. Step 6: Final answer
    x = 7,105.65

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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.