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Finding the Fourth Proportional to 1,862.32, 2,794.59 and 692.43

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Solution

The fourth proportional to 1,862.32, 2,794.59 and 692.43 is: 1,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.32 : 2,794.59 = 692.43 : x
  2. Step 2: Convert to fraction form
    1,862.32/2,794.59 = 692.43/x
  3. Step 3: Cross multiply
    1,862.32x = 2,794.59 × 692.43
  4. Step 4: Simplify right side
    1,862.32x = 1,935,047.47
  5. Step 5: Solve for x
    x = 1,935,047.47/1,862.32
  6. Step 6: Final answer
    x = 1,039.05

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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.