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Finding the Fourth Proportional to 2,489.69, 3,437.01 and 1,928.89

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Solution

The fourth proportional to 2,489.69, 3,437.01 and 1,928.89 is: 2,662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.69 : 3,437.01 = 1,928.89 : x
  2. Step 2: Convert to fraction form
    2,489.69/3,437.01 = 1,928.89/x
  3. Step 3: Cross multiply
    2,489.69x = 3,437.01 × 1,928.89
  4. Step 4: Simplify right side
    2,489.69x = 6,629,603.42
  5. Step 5: Solve for x
    x = 6,629,603.42/2,489.69
  6. Step 6: Final answer
    x = 2,662.83

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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.