Home / 1,902.72-2,852.40-669.84

Finding the Fourth Proportional to 1,902.72, 2,852.40 and 669.84

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Solution

The fourth proportional to 1,902.72, 2,852.40 and 669.84 is: 1,004.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.72 : 2,852.40 = 669.84 : x
  2. Step 2: Convert to fraction form
    1,902.72/2,852.40 = 669.84/x
  3. Step 3: Cross multiply
    1,902.72x = 2,852.40 × 669.84
  4. Step 4: Simplify right side
    1,902.72x = 1,910,651.62
  5. Step 5: Solve for x
    x = 1,910,651.62/1,902.72
  6. Step 6: Final answer
    x = 1,004.17

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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.