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Finding the Fourth Proportional to 3,803.66, 5,706.53 and 1,340.21

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Solution

The fourth proportional to 3,803.66, 5,706.53 and 1,340.21 is: 2,010.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,803.66 : 5,706.53 = 1,340.21 : x
  2. Step 2: Convert to fraction form
    3,803.66/5,706.53 = 1,340.21/x
  3. Step 3: Cross multiply
    3,803.66x = 5,706.53 × 1,340.21
  4. Step 4: Simplify right side
    3,803.66x = 7,647,948.57
  5. Step 5: Solve for x
    x = 7,647,948.57/3,803.66
  6. Step 6: Final answer
    x = 2,010.68

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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.