Home / 9,185.79-12,678.08-5,650.75

Finding the Fourth Proportional to 9,185.79, 12,678.08 and 5,650.75

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Solution

The fourth proportional to 9,185.79, 12,678.08 and 5,650.75 is: 7,799.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,185.79 : 12,678.08 = 5,650.75 : x
  2. Step 2: Convert to fraction form
    9,185.79/12,678.08 = 5,650.75/x
  3. Step 3: Cross multiply
    9,185.79x = 12,678.08 × 5,650.75
  4. Step 4: Simplify right side
    9,185.79x = 71,640,660.56
  5. Step 5: Solve for x
    x = 71,640,660.56/9,185.79
  6. Step 6: Final answer
    x = 7,799.07

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Half scale
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Double scale
Find fourth proportional to 9,186.79, 12,679.46 and 5,651.75
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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.