Home / 1,644.02-2,269.44-980.90

Finding the Fourth Proportional to 1,644.02, 2,269.44 and 980.90

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Solution

The fourth proportional to 1,644.02, 2,269.44 and 980.90 is: 1,354.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.02 : 2,269.44 = 980.90 : x
  2. Step 2: Convert to fraction form
    1,644.02/2,269.44 = 980.90/x
  3. Step 3: Cross multiply
    1,644.02x = 2,269.44 × 980.90
  4. Step 4: Simplify right side
    1,644.02x = 2,226,093.70
  5. Step 5: Solve for x
    x = 2,226,093.70/1,644.02
  6. Step 6: Final answer
    x = 1,354.06

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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.