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Finding the Fourth Proportional to 7,279.44, 10,920.10 and 2,085.44

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Solution

The fourth proportional to 7,279.44, 10,920.10 and 2,085.44 is: 3,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.44 : 10,920.10 = 2,085.44 : x
  2. Step 2: Convert to fraction form
    7,279.44/10,920.10 = 2,085.44/x
  3. Step 3: Cross multiply
    7,279.44x = 10,920.10 × 2,085.44
  4. Step 4: Simplify right side
    7,279.44x = 22,773,213.34
  5. Step 5: Solve for x
    x = 22,773,213.34/7,279.44
  6. Step 6: Final answer
    x = 3,128.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.