Home / 2,245.23-3,369.29-858.69

Finding the Fourth Proportional to 2,245.23, 3,369.29 and 858.69

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Solution

The fourth proportional to 2,245.23, 3,369.29 and 858.69 is: 1,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.23 : 3,369.29 = 858.69 : x
  2. Step 2: Convert to fraction form
    2,245.23/3,369.29 = 858.69/x
  3. Step 3: Cross multiply
    2,245.23x = 3,369.29 × 858.69
  4. Step 4: Simplify right side
    2,245.23x = 2,893,171.34
  5. Step 5: Solve for x
    x = 2,893,171.34/2,245.23
  6. Step 6: Final answer
    x = 1,288.59

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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.