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Finding the Fourth Proportional to 3,386.80, 5,076.84 and 1,657.84

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Solution

The fourth proportional to 3,386.80, 5,076.84 and 1,657.84 is: 2,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.80 : 5,076.84 = 1,657.84 : x
  2. Step 2: Convert to fraction form
    3,386.80/5,076.84 = 1,657.84/x
  3. Step 3: Cross multiply
    3,386.80x = 5,076.84 × 1,657.84
  4. Step 4: Simplify right side
    3,386.80x = 8,416,588.43
  5. Step 5: Solve for x
    x = 8,416,588.43/3,386.80
  6. Step 6: Final answer
    x = 2,485.12

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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.