Home / 2,814.40-4,216.20-1,658.80

Finding the Fourth Proportional to 2,814.40, 4,216.20 and 1,658.80

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Solution

The fourth proportional to 2,814.40, 4,216.20 and 1,658.80 is: 2,485.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.40 : 4,216.20 = 1,658.80 : x
  2. Step 2: Convert to fraction form
    2,814.40/4,216.20 = 1,658.80/x
  3. Step 3: Cross multiply
    2,814.40x = 4,216.20 × 1,658.80
  4. Step 4: Simplify right side
    2,814.40x = 6,993,832.56
  5. Step 5: Solve for x
    x = 6,993,832.56/2,814.40
  6. Step 6: Final answer
    x = 2,485.02

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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.