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Finding the Fourth Proportional to 1,971.33, 2,957.49 and 584.61

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Solution

The fourth proportional to 1,971.33, 2,957.49 and 584.61 is: 877.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.33 : 2,957.49 = 584.61 : x
  2. Step 2: Convert to fraction form
    1,971.33/2,957.49 = 584.61/x
  3. Step 3: Cross multiply
    1,971.33x = 2,957.49 × 584.61
  4. Step 4: Simplify right side
    1,971.33x = 1,728,978.23
  5. Step 5: Solve for x
    x = 1,728,978.23/1,971.33
  6. Step 6: Final answer
    x = 877.06

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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.