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Finding the Fourth Proportional to 9,279.69, 12,805.44 and 5,503.23

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Solution

The fourth proportional to 9,279.69, 12,805.44 and 5,503.23 is: 7,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.69 : 12,805.44 = 5,503.23 : x
  2. Step 2: Convert to fraction form
    9,279.69/12,805.44 = 5,503.23/x
  3. Step 3: Cross multiply
    9,279.69x = 12,805.44 × 5,503.23
  4. Step 4: Simplify right side
    9,279.69x = 70,471,281.57
  5. Step 5: Solve for x
    x = 70,471,281.57/9,279.69
  6. Step 6: Final answer
    x = 7,594.14

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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.