Home / 9,190.07-12,684.90-5,415.42

Finding the Fourth Proportional to 9,190.07, 12,684.90 and 5,415.42

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Solution

The fourth proportional to 9,190.07, 12,684.90 and 5,415.42 is: 7,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.07 : 12,684.90 = 5,415.42 : x
  2. Step 2: Convert to fraction form
    9,190.07/12,684.90 = 5,415.42/x
  3. Step 3: Cross multiply
    9,190.07x = 12,684.90 × 5,415.42
  4. Step 4: Simplify right side
    9,190.07x = 68,694,129.03
  5. Step 5: Solve for x
    x = 68,694,129.03/9,190.07
  6. Step 6: Final answer
    x = 7,474.82

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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.