Home / 1,644.80-2,269.92-946.20

Finding the Fourth Proportional to 1,644.80, 2,269.92 and 946.20

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Solution

The fourth proportional to 1,644.80, 2,269.92 and 946.20 is: 1,305.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.80 : 2,269.92 = 946.20 : x
  2. Step 2: Convert to fraction form
    1,644.80/2,269.92 = 946.20/x
  3. Step 3: Cross multiply
    1,644.80x = 2,269.92 × 946.20
  4. Step 4: Simplify right side
    1,644.80x = 2,147,798.30
  5. Step 5: Solve for x
    x = 2,147,798.30/1,644.80
  6. Step 6: Final answer
    x = 1,305.81

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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.