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Finding the Fourth Proportional to 2,877.71, 3,971.03 and 1,816.52

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Solution

The fourth proportional to 2,877.71, 3,971.03 and 1,816.52 is: 2,506.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.71 : 3,971.03 = 1,816.52 : x
  2. Step 2: Convert to fraction form
    2,877.71/3,971.03 = 1,816.52/x
  3. Step 3: Cross multiply
    2,877.71x = 3,971.03 × 1,816.52
  4. Step 4: Simplify right side
    2,877.71x = 7,213,426.48
  5. Step 5: Solve for x
    x = 7,213,426.48/2,877.71
  6. Step 6: Final answer
    x = 2,506.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.