Home / 6,520.32-9,806.40-6,128.64

Finding the Fourth Proportional to 6,520.32, 9,806.40 and 6,128.64

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Solution

The fourth proportional to 6,520.32, 9,806.40 and 6,128.64 is: 9,217.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.32 : 9,806.40 = 6,128.64 : x
  2. Step 2: Convert to fraction form
    6,520.32/9,806.40 = 6,128.64/x
  3. Step 3: Cross multiply
    6,520.32x = 9,806.40 × 6,128.64
  4. Step 4: Simplify right side
    6,520.32x = 60,099,895.30
  5. Step 5: Solve for x
    x = 60,099,895.30/6,520.32
  6. Step 6: Final answer
    x = 9,217.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.