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Finding the Fourth Proportional to 3,069.84, 4,234.23 and 1,891.56

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Solution

The fourth proportional to 3,069.84, 4,234.23 and 1,891.56 is: 2,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.84 : 4,234.23 = 1,891.56 : x
  2. Step 2: Convert to fraction form
    3,069.84/4,234.23 = 1,891.56/x
  3. Step 3: Cross multiply
    3,069.84x = 4,234.23 × 1,891.56
  4. Step 4: Simplify right side
    3,069.84x = 8,009,300.10
  5. Step 5: Solve for x
    x = 8,009,300.10/3,069.84
  6. Step 6: Final answer
    x = 2,609.03

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1.5x scale

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.