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Finding the Fourth Proportional to 3,803.96, 5,708.48 and 1,338.80

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Solution

The fourth proportional to 3,803.96, 5,708.48 and 1,338.80 is: 2,009.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,803.96 : 5,708.48 = 1,338.80 : x
  2. Step 2: Convert to fraction form
    3,803.96/5,708.48 = 1,338.80/x
  3. Step 3: Cross multiply
    3,803.96x = 5,708.48 × 1,338.80
  4. Step 4: Simplify right side
    3,803.96x = 7,642,477.79
  5. Step 5: Solve for x
    x = 7,642,477.79/3,803.96
  6. Step 6: Final answer
    x = 2,009.09

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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.