Home / 1,644.84-2,272.44-1,398.72

Finding the Fourth Proportional to 1,644.84, 2,272.44 and 1,398.72

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Solution

The fourth proportional to 1,644.84, 2,272.44 and 1,398.72 is: 1,932.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.84 : 2,272.44 = 1,398.72 : x
  2. Step 2: Convert to fraction form
    1,644.84/2,272.44 = 1,398.72/x
  3. Step 3: Cross multiply
    1,644.84x = 2,272.44 × 1,398.72
  4. Step 4: Simplify right side
    1,644.84x = 3,178,507.28
  5. Step 5: Solve for x
    x = 3,178,507.28/1,644.84
  6. Step 6: Final answer
    x = 1,932.41

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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.