Home / 1,644.56-2,269.32-981.44

Finding the Fourth Proportional to 1,644.56, 2,269.32 and 981.44

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Solution

The fourth proportional to 1,644.56, 2,269.32 and 981.44 is: 1,354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.56 : 2,269.32 = 981.44 : x
  2. Step 2: Convert to fraction form
    1,644.56/2,269.32 = 981.44/x
  3. Step 3: Cross multiply
    1,644.56x = 2,269.32 × 981.44
  4. Step 4: Simplify right side
    1,644.56x = 2,227,201.42
  5. Step 5: Solve for x
    x = 2,227,201.42/1,644.56
  6. Step 6: Final answer
    x = 1,354.28

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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.