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Finding the Fourth Proportional to 1,618.66, 2,426.11 and 692.83

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Solution

The fourth proportional to 1,618.66, 2,426.11 and 692.83 is: 1,038.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.66 : 2,426.11 = 692.83 : x
  2. Step 2: Convert to fraction form
    1,618.66/2,426.11 = 692.83/x
  3. Step 3: Cross multiply
    1,618.66x = 2,426.11 × 692.83
  4. Step 4: Simplify right side
    1,618.66x = 1,680,881.79
  5. Step 5: Solve for x
    x = 1,680,881.79/1,618.66
  6. Step 6: Final answer
    x = 1,038.44

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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.