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Finding the Fourth Proportional to 3,045.72, 4,203 and 1,719.54

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Solution

The fourth proportional to 3,045.72, 4,203 and 1,719.54 is: 2,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,045.72 : 4,203 = 1,719.54 : x
  2. Step 2: Convert to fraction form
    3,045.72/4,203 = 1,719.54/x
  3. Step 3: Cross multiply
    3,045.72x = 4,203 × 1,719.54
  4. Step 4: Simplify right side
    3,045.72x = 7,227,226.62
  5. Step 5: Solve for x
    x = 7,227,226.62/3,045.72
  6. Step 6: Final answer
    x = 2,372.91

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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.