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Finding the Fourth Proportional to 2,460.37, 3,690 and 816.49

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Solution

The fourth proportional to 2,460.37, 3,690 and 816.49 is: 1,224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,460.37 : 3,690 = 816.49 : x
  2. Step 2: Convert to fraction form
    2,460.37/3,690 = 816.49/x
  3. Step 3: Cross multiply
    2,460.37x = 3,690 × 816.49
  4. Step 4: Simplify right side
    2,460.37x = 3,012,848.10
  5. Step 5: Solve for x
    x = 3,012,848.10/2,460.37
  6. Step 6: Final answer
    x = 1,224.55

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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.