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Finding the Fourth Proportional to 3,160.83, 4,359.92 and 1,918.83

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Solution

The fourth proportional to 3,160.83, 4,359.92 and 1,918.83 is: 2,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.83 : 4,359.92 = 1,918.83 : x
  2. Step 2: Convert to fraction form
    3,160.83/4,359.92 = 1,918.83/x
  3. Step 3: Cross multiply
    3,160.83x = 4,359.92 × 1,918.83
  4. Step 4: Simplify right side
    3,160.83x = 8,365,935.70
  5. Step 5: Solve for x
    x = 8,365,935.70/3,160.83
  6. Step 6: Final answer
    x = 2,646.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.