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Finding the Fourth Proportional to 2,540.64, 3,816.81 and 1,802.08

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Solution

The fourth proportional to 2,540.64, 3,816.81 and 1,802.08 is: 2,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.64 : 3,816.81 = 1,802.08 : x
  2. Step 2: Convert to fraction form
    2,540.64/3,816.81 = 1,802.08/x
  3. Step 3: Cross multiply
    2,540.64x = 3,816.81 × 1,802.08
  4. Step 4: Simplify right side
    2,540.64x = 6,878,201.74
  5. Step 5: Solve for x
    x = 6,878,201.74/2,540.64
  6. Step 6: Final answer
    x = 2,707.27

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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.