Home / 9,188.13-12,679.13-5,207.79

Finding the Fourth Proportional to 9,188.13, 12,679.13 and 5,207.79

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Solution

The fourth proportional to 9,188.13, 12,679.13 and 5,207.79 is: 7,186.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,188.13 : 12,679.13 = 5,207.79 : x
  2. Step 2: Convert to fraction form
    9,188.13/12,679.13 = 5,207.79/x
  3. Step 3: Cross multiply
    9,188.13x = 12,679.13 × 5,207.79
  4. Step 4: Simplify right side
    9,188.13x = 66,030,306.99
  5. Step 5: Solve for x
    x = 66,030,306.99/9,188.13
  6. Step 6: Final answer
    x = 7,186.48

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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.