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Finding the Fourth Proportional to 6,386.49, 8,808.37 and 4,149.09

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Solution

The fourth proportional to 6,386.49, 8,808.37 and 4,149.09 is: 5,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.49 : 8,808.37 = 4,149.09 : x
  2. Step 2: Convert to fraction form
    6,386.49/8,808.37 = 4,149.09/x
  3. Step 3: Cross multiply
    6,386.49x = 8,808.37 × 4,149.09
  4. Step 4: Simplify right side
    6,386.49x = 36,546,709.51
  5. Step 5: Solve for x
    x = 36,546,709.51/6,386.49
  6. Step 6: Final answer
    x = 5,722.50

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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.