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Finding the Fourth Proportional to 1,878.63, 2,812.17 and 1,692.74

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Solution

The fourth proportional to 1,878.63, 2,812.17 and 1,692.74 is: 2,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.63 : 2,812.17 = 1,692.74 : x
  2. Step 2: Convert to fraction form
    1,878.63/2,812.17 = 1,692.74/x
  3. Step 3: Cross multiply
    1,878.63x = 2,812.17 × 1,692.74
  4. Step 4: Simplify right side
    1,878.63x = 4,760,264.93
  5. Step 5: Solve for x
    x = 4,760,264.93/1,878.63
  6. Step 6: Final answer
    x = 2,533.90

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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.