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Finding the Fourth Proportional to 1,877.64, 2,817.75 and 708.54

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Solution

The fourth proportional to 1,877.64, 2,817.75 and 708.54 is: 1,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.64 : 2,817.75 = 708.54 : x
  2. Step 2: Convert to fraction form
    1,877.64/2,817.75 = 708.54/x
  3. Step 3: Cross multiply
    1,877.64x = 2,817.75 × 708.54
  4. Step 4: Simplify right side
    1,877.64x = 1,996,488.59
  5. Step 5: Solve for x
    x = 1,996,488.59/1,877.64
  6. Step 6: Final answer
    x = 1,063.30

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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.