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Finding the Fourth Proportional to 3,808.90, 5,671.73 and 3,668.77

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Solution

The fourth proportional to 3,808.90, 5,671.73 and 3,668.77 is: 5,463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.90 : 5,671.73 = 3,668.77 : x
  2. Step 2: Convert to fraction form
    3,808.90/5,671.73 = 3,668.77/x
  3. Step 3: Cross multiply
    3,808.90x = 5,671.73 × 3,668.77
  4. Step 4: Simplify right side
    3,808.90x = 20,808,259.11
  5. Step 5: Solve for x
    x = 20,808,259.11/3,808.90
  6. Step 6: Final answer
    x = 5,463.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.