Home / 1,692.48-2,331.54-1,318.80

Finding the Fourth Proportional to 1,692.48, 2,331.54 and 1,318.80

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Solution

The fourth proportional to 1,692.48, 2,331.54 and 1,318.80 is: 1,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.48 : 2,331.54 = 1,318.80 : x
  2. Step 2: Convert to fraction form
    1,692.48/2,331.54 = 1,318.80/x
  3. Step 3: Cross multiply
    1,692.48x = 2,331.54 × 1,318.80
  4. Step 4: Simplify right side
    1,692.48x = 3,074,834.95
  5. Step 5: Solve for x
    x = 3,074,834.95/1,692.48
  6. Step 6: Final answer
    x = 1,816.76

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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.