Home / 1,692.20-2,334.48-983.72

Finding the Fourth Proportional to 1,692.20, 2,334.48 and 983.72

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Solution

The fourth proportional to 1,692.20, 2,334.48 and 983.72 is: 1,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.20 : 2,334.48 = 983.72 : x
  2. Step 2: Convert to fraction form
    1,692.20/2,334.48 = 983.72/x
  3. Step 3: Cross multiply
    1,692.20x = 2,334.48 × 983.72
  4. Step 4: Simplify right side
    1,692.20x = 2,296,474.67
  5. Step 5: Solve for x
    x = 2,296,474.67/1,692.20
  6. Step 6: Final answer
    x = 1,357.09

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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.