Home / 6,415.60-8,850.36-3,761.28

Finding the Fourth Proportional to 6,415.60, 8,850.36 and 3,761.28

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Solution

The fourth proportional to 6,415.60, 8,850.36 and 3,761.28 is: 5,188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.60 : 8,850.36 = 3,761.28 : x
  2. Step 2: Convert to fraction form
    6,415.60/8,850.36 = 3,761.28/x
  3. Step 3: Cross multiply
    6,415.60x = 8,850.36 × 3,761.28
  4. Step 4: Simplify right side
    6,415.60x = 33,288,682.06
  5. Step 5: Solve for x
    x = 33,288,682.06/6,415.60
  6. Step 6: Final answer
    x = 5,188.71

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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.