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Finding the Fourth Proportional to 2,125.56, 3,188.40 and 586.56

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Solution

The fourth proportional to 2,125.56, 3,188.40 and 586.56 is: 879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.56 : 3,188.40 = 586.56 : x
  2. Step 2: Convert to fraction form
    2,125.56/3,188.40 = 586.56/x
  3. Step 3: Cross multiply
    2,125.56x = 3,188.40 × 586.56
  4. Step 4: Simplify right side
    2,125.56x = 1,870,187.90
  5. Step 5: Solve for x
    x = 1,870,187.90/2,125.56
  6. Step 6: Final answer
    x = 879.86

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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.