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Finding the Fourth Proportional to 2,918.63, 4,375.49 and 1,357.83

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Solution

The fourth proportional to 2,918.63, 4,375.49 and 1,357.83 is: 2,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.63 : 4,375.49 = 1,357.83 : x
  2. Step 2: Convert to fraction form
    2,918.63/4,375.49 = 1,357.83/x
  3. Step 3: Cross multiply
    2,918.63x = 4,375.49 × 1,357.83
  4. Step 4: Simplify right side
    2,918.63x = 5,941,164.80
  5. Step 5: Solve for x
    x = 5,941,164.80/2,918.63
  6. Step 6: Final answer
    x = 2,035.60

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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.