Home / 2,179.79-3,269.34-946.87

Finding the Fourth Proportional to 2,179.79, 3,269.34 and 946.87

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Solution

The fourth proportional to 2,179.79, 3,269.34 and 946.87 is: 1,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.79 : 3,269.34 = 946.87 : x
  2. Step 2: Convert to fraction form
    2,179.79/3,269.34 = 946.87/x
  3. Step 3: Cross multiply
    2,179.79x = 3,269.34 × 946.87
  4. Step 4: Simplify right side
    2,179.79x = 3,095,644.05
  5. Step 5: Solve for x
    x = 3,095,644.05/2,179.79
  6. Step 6: Final answer
    x = 1,420.16

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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.