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Finding the Fourth Proportional to 2,658.56, 3,989.06 and 1,015.48

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Solution

The fourth proportional to 2,658.56, 3,989.06 and 1,015.48 is: 1,523.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.56 : 3,989.06 = 1,015.48 : x
  2. Step 2: Convert to fraction form
    2,658.56/3,989.06 = 1,015.48/x
  3. Step 3: Cross multiply
    2,658.56x = 3,989.06 × 1,015.48
  4. Step 4: Simplify right side
    2,658.56x = 4,050,810.65
  5. Step 5: Solve for x
    x = 4,050,810.65/2,658.56
  6. Step 6: Final answer
    x = 1,523.69

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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.