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Finding the Fourth Proportional to 2,558.46, 3,837.67 and 658.78

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Solution

The fourth proportional to 2,558.46, 3,837.67 and 658.78 is: 988.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.46 : 3,837.67 = 658.78 : x
  2. Step 2: Convert to fraction form
    2,558.46/3,837.67 = 658.78/x
  3. Step 3: Cross multiply
    2,558.46x = 3,837.67 × 658.78
  4. Step 4: Simplify right side
    2,558.46x = 2,528,180.24
  5. Step 5: Solve for x
    x = 2,528,180.24/2,558.46
  6. Step 6: Final answer
    x = 988.16

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1.5x scale

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.