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Finding the Fourth Proportional to 6,415.96, 8,854.17 and 3,765.28

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Solution

The fourth proportional to 6,415.96, 8,854.17 and 3,765.28 is: 5,196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.96 : 8,854.17 = 3,765.28 : x
  2. Step 2: Convert to fraction form
    6,415.96/8,854.17 = 3,765.28/x
  3. Step 3: Cross multiply
    6,415.96x = 8,854.17 × 3,765.28
  4. Step 4: Simplify right side
    6,415.96x = 33,338,429.22
  5. Step 5: Solve for x
    x = 33,338,429.22/6,415.96
  6. Step 6: Final answer
    x = 5,196.17

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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.