Home / 9,188.39-12,679.59-5,209.77

Finding the Fourth Proportional to 9,188.39, 12,679.59 and 5,209.77

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Solution

The fourth proportional to 9,188.39, 12,679.59 and 5,209.77 is: 7,189.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,188.39 : 12,679.59 = 5,209.77 : x
  2. Step 2: Convert to fraction form
    9,188.39/12,679.59 = 5,209.77/x
  3. Step 3: Cross multiply
    9,188.39x = 12,679.59 × 5,209.77
  4. Step 4: Simplify right side
    9,188.39x = 66,057,767.13
  5. Step 5: Solve for x
    x = 66,057,767.13/9,188.39
  6. Step 6: Final answer
    x = 7,189.27

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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.