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Finding the Fourth Proportional to 2,609.94, 3,913.82 and 1,788.46

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Solution

The fourth proportional to 2,609.94, 3,913.82 and 1,788.46 is: 2,681.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.94 : 3,913.82 = 1,788.46 : x
  2. Step 2: Convert to fraction form
    2,609.94/3,913.82 = 1,788.46/x
  3. Step 3: Cross multiply
    2,609.94x = 3,913.82 × 1,788.46
  4. Step 4: Simplify right side
    2,609.94x = 6,999,710.52
  5. Step 5: Solve for x
    x = 6,999,710.52/2,609.94
  6. Step 6: Final answer
    x = 2,681.94

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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.