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Finding the Fourth Proportional to 3,673.80, 5,510.94 and 1,208.40

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Solution

The fourth proportional to 3,673.80, 5,510.94 and 1,208.40 is: 1,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,673.80 : 5,510.94 = 1,208.40 : x
  2. Step 2: Convert to fraction form
    3,673.80/5,510.94 = 1,208.40/x
  3. Step 3: Cross multiply
    3,673.80x = 5,510.94 × 1,208.40
  4. Step 4: Simplify right side
    3,673.80x = 6,659,419.90
  5. Step 5: Solve for x
    x = 6,659,419.90/3,673.80
  6. Step 6: Final answer
    x = 1,812.68

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1.5x scale

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.