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Finding the Fourth Proportional to 2,658.58, 3,990.30 and 2,040.28

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Solution

The fourth proportional to 2,658.58, 3,990.30 and 2,040.28 is: 3,062.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.58 : 3,990.30 = 2,040.28 : x
  2. Step 2: Convert to fraction form
    2,658.58/3,990.30 = 2,040.28/x
  3. Step 3: Cross multiply
    2,658.58x = 3,990.30 × 2,040.28
  4. Step 4: Simplify right side
    2,658.58x = 8,141,311.66
  5. Step 5: Solve for x
    x = 8,141,311.66/2,658.58
  6. Step 6: Final answer
    x = 3,062.28

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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.