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Finding the Fourth Proportional to 6,385.41, 8,809.31 and 4,026.20

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Solution

The fourth proportional to 6,385.41, 8,809.31 and 4,026.20 is: 5,554.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.41 : 8,809.31 = 4,026.20 : x
  2. Step 2: Convert to fraction form
    6,385.41/8,809.31 = 4,026.20/x
  3. Step 3: Cross multiply
    6,385.41x = 8,809.31 × 4,026.20
  4. Step 4: Simplify right side
    6,385.41x = 35,467,979.74
  5. Step 5: Solve for x
    x = 35,467,979.74/6,385.41
  6. Step 6: Final answer
    x = 5,554.53

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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.