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Finding the Fourth Proportional to 2,484.78, 3,724.80 and 923.72

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Solution

The fourth proportional to 2,484.78, 3,724.80 and 923.72 is: 1,384.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,484.78 : 3,724.80 = 923.72 : x
  2. Step 2: Convert to fraction form
    2,484.78/3,724.80 = 923.72/x
  3. Step 3: Cross multiply
    2,484.78x = 3,724.80 × 923.72
  4. Step 4: Simplify right side
    2,484.78x = 3,440,653.63
  5. Step 5: Solve for x
    x = 3,440,653.63/2,484.78
  6. Step 6: Final answer
    x = 1,384.69

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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.