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Finding the Fourth Proportional to 1,890.87, 2,836.88 and 967.08

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Solution

The fourth proportional to 1,890.87, 2,836.88 and 967.08 is: 1,450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.87 : 2,836.88 = 967.08 : x
  2. Step 2: Convert to fraction form
    1,890.87/2,836.88 = 967.08/x
  3. Step 3: Cross multiply
    1,890.87x = 2,836.88 × 967.08
  4. Step 4: Simplify right side
    1,890.87x = 2,743,476.93
  5. Step 5: Solve for x
    x = 2,743,476.93/1,890.87
  6. Step 6: Final answer
    x = 1,450.91

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1.5x scale

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.