Home / 1,644.78-2,269.71-1,224.30

Finding the Fourth Proportional to 1,644.78, 2,269.71 and 1,224.30

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Solution

The fourth proportional to 1,644.78, 2,269.71 and 1,224.30 is: 1,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.78 : 2,269.71 = 1,224.30 : x
  2. Step 2: Convert to fraction form
    1,644.78/2,269.71 = 1,224.30/x
  3. Step 3: Cross multiply
    1,644.78x = 2,269.71 × 1,224.30
  4. Step 4: Simplify right side
    1,644.78x = 2,778,805.95
  5. Step 5: Solve for x
    x = 2,778,805.95/1,644.78
  6. Step 6: Final answer
    x = 1,689.47

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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.