Home / 6,368.08-9,538.60-5,128.80

Finding the Fourth Proportional to 6,368.08, 9,538.60 and 5,128.80

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Solution

The fourth proportional to 6,368.08, 9,538.60 and 5,128.80 is: 7,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,368.08 : 9,538.60 = 5,128.80 : x
  2. Step 2: Convert to fraction form
    6,368.08/9,538.60 = 5,128.80/x
  3. Step 3: Cross multiply
    6,368.08x = 9,538.60 × 5,128.80
  4. Step 4: Simplify right side
    6,368.08x = 48,921,571.68
  5. Step 5: Solve for x
    x = 48,921,571.68/6,368.08
  6. Step 6: Final answer
    x = 7,682.31

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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.