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Finding the Fourth Proportional to 3,873.66, 5,809.08 and 1,276.02

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Solution

The fourth proportional to 3,873.66, 5,809.08 and 1,276.02 is: 1,913.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.66 : 5,809.08 = 1,276.02 : x
  2. Step 2: Convert to fraction form
    3,873.66/5,809.08 = 1,276.02/x
  3. Step 3: Cross multiply
    3,873.66x = 5,809.08 × 1,276.02
  4. Step 4: Simplify right side
    3,873.66x = 7,412,502.26
  5. Step 5: Solve for x
    x = 7,412,502.26/3,873.66
  6. Step 6: Final answer
    x = 1,913.57

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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.