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Finding the Fourth Proportional to 1,883.65, 2,600.00 and 1,220.55

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Solution

The fourth proportional to 1,883.65, 2,600.00 and 1,220.55 is: 1,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,883.65 : 2,600.00 = 1,220.55 : x
  2. Step 2: Convert to fraction form
    1,883.65/2,600.00 = 1,220.55/x
  3. Step 3: Cross multiply
    1,883.65x = 2,600.00 × 1,220.55
  4. Step 4: Simplify right side
    1,883.65x = 3,173,410.90
  5. Step 5: Solve for x
    x = 3,173,410.90/1,883.65
  6. Step 6: Final answer
    x = 1,684.71

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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.