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Finding the Fourth Proportional to 2,460.64, 3,691.44 and 922.72

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Solution

The fourth proportional to 2,460.64, 3,691.44 and 922.72 is: 1,384.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,460.64 : 3,691.44 = 922.72 : x
  2. Step 2: Convert to fraction form
    2,460.64/3,691.44 = 922.72/x
  3. Step 3: Cross multiply
    2,460.64x = 3,691.44 × 922.72
  4. Step 4: Simplify right side
    2,460.64x = 3,406,165.52
  5. Step 5: Solve for x
    x = 3,406,165.52/2,460.64
  6. Step 6: Final answer
    x = 1,384.26

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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.