Home / 6,345.20-8,756.18-3,512.69

Finding the Fourth Proportional to 6,345.20, 8,756.18 and 3,512.69

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Solution

The fourth proportional to 6,345.20, 8,756.18 and 3,512.69 is: 4,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,345.20 : 8,756.18 = 3,512.69 : x
  2. Step 2: Convert to fraction form
    6,345.20/8,756.18 = 3,512.69/x
  3. Step 3: Cross multiply
    6,345.20x = 8,756.18 × 3,512.69
  4. Step 4: Simplify right side
    6,345.20x = 30,757,745.92
  5. Step 5: Solve for x
    x = 30,757,745.92/6,345.20
  6. Step 6: Final answer
    x = 4,847.40

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Half scale
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Double scale
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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.