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Finding the Fourth Proportional to 3,362.44, 5,040.70 and 1,309

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Solution

The fourth proportional to 3,362.44, 5,040.70 and 1,309 is: 1,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,362.44 : 5,040.70 = 1,309 : x
  2. Step 2: Convert to fraction form
    3,362.44/5,040.70 = 1,309/x
  3. Step 3: Cross multiply
    3,362.44x = 5,040.70 × 1,309
  4. Step 4: Simplify right side
    3,362.44x = 6,598,276.30
  5. Step 5: Solve for x
    x = 6,598,276.30/3,362.44
  6. Step 6: Final answer
    x = 1,962.35

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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.