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Finding the Fourth Proportional to 2,252.76, 3,378.86 and 609.20

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Solution

The fourth proportional to 2,252.76, 3,378.86 and 609.20 is: 913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,252.76 : 3,378.86 = 609.20 : x
  2. Step 2: Convert to fraction form
    2,252.76/3,378.86 = 609.20/x
  3. Step 3: Cross multiply
    2,252.76x = 3,378.86 × 609.20
  4. Step 4: Simplify right side
    2,252.76x = 2,058,401.51
  5. Step 5: Solve for x
    x = 2,058,401.51/2,252.76
  6. Step 6: Final answer
    x = 913.72

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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.