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Finding the Fourth Proportional to 1,224.72, 1,835.88 and 937.36

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Solution

The fourth proportional to 1,224.72, 1,835.88 and 937.36 is: 1,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.72 : 1,835.88 = 937.36 : x
  2. Step 2: Convert to fraction form
    1,224.72/1,835.88 = 937.36/x
  3. Step 3: Cross multiply
    1,224.72x = 1,835.88 × 937.36
  4. Step 4: Simplify right side
    1,224.72x = 1,720,880.48
  5. Step 5: Solve for x
    x = 1,720,880.48/1,224.72
  6. Step 6: Final answer
    x = 1,405.12

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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.