Home / 6,328.20-8,724.78-5,189.69

Finding the Fourth Proportional to 6,328.20, 8,724.78 and 5,189.69

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Solution

The fourth proportional to 6,328.20, 8,724.78 and 5,189.69 is: 7,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,328.20 : 8,724.78 = 5,189.69 : x
  2. Step 2: Convert to fraction form
    6,328.20/8,724.78 = 5,189.69/x
  3. Step 3: Cross multiply
    6,328.20x = 8,724.78 × 5,189.69
  4. Step 4: Simplify right side
    6,328.20x = 45,278,925.33
  5. Step 5: Solve for x
    x = 45,278,925.33/6,328.20
  6. Step 6: Final answer
    x = 7,155.10

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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.