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Finding the Fourth Proportional to 2,658.55, 3,986.23 and 1,015.22

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Solution

The fourth proportional to 2,658.55, 3,986.23 and 1,015.22 is: 1,522.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.55 : 3,986.23 = 1,015.22 : x
  2. Step 2: Convert to fraction form
    2,658.55/3,986.23 = 1,015.22/x
  3. Step 3: Cross multiply
    2,658.55x = 3,986.23 × 1,015.22
  4. Step 4: Simplify right side
    2,658.55x = 4,046,900.42
  5. Step 5: Solve for x
    x = 4,046,900.42/2,658.55
  6. Step 6: Final answer
    x = 1,522.22

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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.