Home / 9,188.18-12,679.97-5,209.46

Finding the Fourth Proportional to 9,188.18, 12,679.97 and 5,209.46

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Solution

The fourth proportional to 9,188.18, 12,679.97 and 5,209.46 is: 7,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,188.18 : 12,679.97 = 5,209.46 : x
  2. Step 2: Convert to fraction form
    9,188.18/12,679.97 = 5,209.46/x
  3. Step 3: Cross multiply
    9,188.18x = 12,679.97 × 5,209.46
  4. Step 4: Simplify right side
    9,188.18x = 66,055,707.07
  5. Step 5: Solve for x
    x = 66,055,707.07/9,188.18
  6. Step 6: Final answer
    x = 7,189.21

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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.