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Finding the Fourth Proportional to 1,586.52, 2,188.98 and 996.84

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Solution

The fourth proportional to 1,586.52, 2,188.98 and 996.84 is: 1,375.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.52 : 2,188.98 = 996.84 : x
  2. Step 2: Convert to fraction form
    1,586.52/2,188.98 = 996.84/x
  3. Step 3: Cross multiply
    1,586.52x = 2,188.98 × 996.84
  4. Step 4: Simplify right side
    1,586.52x = 2,182,062.82
  5. Step 5: Solve for x
    x = 2,182,062.82/1,586.52
  6. Step 6: Final answer
    x = 1,375.38

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1.5x scale

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.