Home / 1,644.30-2,269.64-1,120.63

Finding the Fourth Proportional to 1,644.30, 2,269.64 and 1,120.63

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Solution

The fourth proportional to 1,644.30, 2,269.64 and 1,120.63 is: 1,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.30 : 2,269.64 = 1,120.63 : x
  2. Step 2: Convert to fraction form
    1,644.30/2,269.64 = 1,120.63/x
  3. Step 3: Cross multiply
    1,644.30x = 2,269.64 × 1,120.63
  4. Step 4: Simplify right side
    1,644.30x = 2,543,426.67
  5. Step 5: Solve for x
    x = 2,543,426.67/1,644.30
  6. Step 6: Final answer
    x = 1,546.81

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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.