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Finding the Fourth Proportional to 2,125.56, 3,188.53 and 586.56

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Solution

The fourth proportional to 2,125.56, 3,188.53 and 586.56 is: 879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.56 : 3,188.53 = 586.56 : x
  2. Step 2: Convert to fraction form
    2,125.56/3,188.53 = 586.56/x
  3. Step 3: Cross multiply
    2,125.56x = 3,188.53 × 586.56
  4. Step 4: Simplify right side
    2,125.56x = 1,870,270.66
  5. Step 5: Solve for x
    x = 1,870,270.66/2,125.56
  6. Step 6: Final answer
    x = 879.89

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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.