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Finding the Fourth Proportional to 5,335.06, 7,999.80 and 1,636.78

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Solution

The fourth proportional to 5,335.06, 7,999.80 and 1,636.78 is: 2,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,335.06 : 7,999.80 = 1,636.78 : x
  2. Step 2: Convert to fraction form
    5,335.06/7,999.80 = 1,636.78/x
  3. Step 3: Cross multiply
    5,335.06x = 7,999.80 × 1,636.78
  4. Step 4: Simplify right side
    5,335.06x = 13,093,912.64
  5. Step 5: Solve for x
    x = 13,093,912.64/5,335.06
  6. Step 6: Final answer
    x = 2,454.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.