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Finding the Fourth Proportional to 2,840.88, 4,262.46 and 1,379.88

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Solution

The fourth proportional to 2,840.88, 4,262.46 and 1,379.88 is: 2,070.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.88 : 4,262.46 = 1,379.88 : x
  2. Step 2: Convert to fraction form
    2,840.88/4,262.46 = 1,379.88/x
  3. Step 3: Cross multiply
    2,840.88x = 4,262.46 × 1,379.88
  4. Step 4: Simplify right side
    2,840.88x = 5,881,683.30
  5. Step 5: Solve for x
    x = 5,881,683.30/2,840.88
  6. Step 6: Final answer
    x = 2,070.37

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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.