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Finding the Fourth Proportional to 5,285, 7,292.94 and 2,927.36

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Solution

The fourth proportional to 5,285, 7,292.94 and 2,927.36 is: 4,039.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285 : 7,292.94 = 2,927.36 : x
  2. Step 2: Convert to fraction form
    5,285/7,292.94 = 2,927.36/x
  3. Step 3: Cross multiply
    5,285x = 7,292.94 × 2,927.36
  4. Step 4: Simplify right side
    5,285x = 21,349,060.84
  5. Step 5: Solve for x
    x = 21,349,060.84/5,285
  6. Step 6: Final answer
    x = 4,039.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.