Home / 9,138.06-12,608.46-5,551.92

Finding the Fourth Proportional to 9,138.06, 12,608.46 and 5,551.92

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Solution

The fourth proportional to 9,138.06, 12,608.46 and 5,551.92 is: 7,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.06 : 12,608.46 = 5,551.92 : x
  2. Step 2: Convert to fraction form
    9,138.06/12,608.46 = 5,551.92/x
  3. Step 3: Cross multiply
    9,138.06x = 12,608.46 × 5,551.92
  4. Step 4: Simplify right side
    9,138.06x = 70,001,161.24
  5. Step 5: Solve for x
    x = 70,001,161.24/9,138.06
  6. Step 6: Final answer
    x = 7,660.40

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Half scale
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Double scale
Find fourth proportional to 9,139.06, 12,609.84 and 5,552.92
Similar ratio
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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.