Home / 8,378.38-11,561.32-5,021.12

Finding the Fourth Proportional to 8,378.38, 11,561.32 and 5,021.12

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Solution

The fourth proportional to 8,378.38, 11,561.32 and 5,021.12 is: 6,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.38 : 11,561.32 = 5,021.12 : x
  2. Step 2: Convert to fraction form
    8,378.38/11,561.32 = 5,021.12/x
  3. Step 3: Cross multiply
    8,378.38x = 11,561.32 × 5,021.12
  4. Step 4: Simplify right side
    8,378.38x = 58,050,775.08
  5. Step 5: Solve for x
    x = 58,050,775.08/8,378.38
  6. Step 6: Final answer
    x = 6,928.64

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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.