Home / 3,500.90-5,251.20-1,309.64

Finding the Fourth Proportional to 3,500.90, 5,251.20 and 1,309.64

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Solution

The fourth proportional to 3,500.90, 5,251.20 and 1,309.64 is: 1,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.90 : 5,251.20 = 1,309.64 : x
  2. Step 2: Convert to fraction form
    3,500.90/5,251.20 = 1,309.64/x
  3. Step 3: Cross multiply
    3,500.90x = 5,251.20 × 1,309.64
  4. Step 4: Simplify right side
    3,500.90x = 6,877,181.57
  5. Step 5: Solve for x
    x = 6,877,181.57/3,500.90
  6. Step 6: Final answer
    x = 1,964.40

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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.