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Finding the Fourth Proportional to 2,759.73, 3,808.71 and 1,640.94

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Solution

The fourth proportional to 2,759.73, 3,808.71 and 1,640.94 is: 2,264.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.73 : 3,808.71 = 1,640.94 : x
  2. Step 2: Convert to fraction form
    2,759.73/3,808.71 = 1,640.94/x
  3. Step 3: Cross multiply
    2,759.73x = 3,808.71 × 1,640.94
  4. Step 4: Simplify right side
    2,759.73x = 6,249,864.59
  5. Step 5: Solve for x
    x = 6,249,864.59/2,759.73
  6. Step 6: Final answer
    x = 2,264.67

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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.