Home / 6,816.96-9,407.34-4,128.30

Finding the Fourth Proportional to 6,816.96, 9,407.34 and 4,128.30

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Solution

The fourth proportional to 6,816.96, 9,407.34 and 4,128.30 is: 5,697.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,816.96 : 9,407.34 = 4,128.30 : x
  2. Step 2: Convert to fraction form
    6,816.96/9,407.34 = 4,128.30/x
  3. Step 3: Cross multiply
    6,816.96x = 9,407.34 × 4,128.30
  4. Step 4: Simplify right side
    6,816.96x = 38,836,321.72
  5. Step 5: Solve for x
    x = 38,836,321.72/6,816.96
  6. Step 6: Final answer
    x = 5,697.01

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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.