Home / 9,137.81-12,608.03-5,360.78

Finding the Fourth Proportional to 9,137.81, 12,608.03 and 5,360.78

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Solution

The fourth proportional to 9,137.81, 12,608.03 and 5,360.78 is: 7,396.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.81 : 12,608.03 = 5,360.78 : x
  2. Step 2: Convert to fraction form
    9,137.81/12,608.03 = 5,360.78/x
  3. Step 3: Cross multiply
    9,137.81x = 12,608.03 × 5,360.78
  4. Step 4: Simplify right side
    9,137.81x = 67,588,785.22
  5. Step 5: Solve for x
    x = 67,588,785.22/9,137.81
  6. Step 6: Final answer
    x = 7,396.61

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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.