Home / 3,102.90-4,281.92-1,705.64

Finding the Fourth Proportional to 3,102.90, 4,281.92 and 1,705.64

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Solution

The fourth proportional to 3,102.90, 4,281.92 and 1,705.64 is: 2,353.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.90 : 4,281.92 = 1,705.64 : x
  2. Step 2: Convert to fraction form
    3,102.90/4,281.92 = 1,705.64/x
  3. Step 3: Cross multiply
    3,102.90x = 4,281.92 × 1,705.64
  4. Step 4: Simplify right side
    3,102.90x = 7,303,414.03
  5. Step 5: Solve for x
    x = 7,303,414.03/3,102.90
  6. Step 6: Final answer
    x = 2,353.74

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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.