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Finding the Fourth Proportional to 8,905.23, 12,287.23 and 5,319.23

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Solution

The fourth proportional to 8,905.23, 12,287.23 and 5,319.23 is: 7,339.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.23 : 12,287.23 = 5,319.23 : x
  2. Step 2: Convert to fraction form
    8,905.23/12,287.23 = 5,319.23/x
  3. Step 3: Cross multiply
    8,905.23x = 12,287.23 × 5,319.23
  4. Step 4: Simplify right side
    8,905.23x = 65,358,527.70
  5. Step 5: Solve for x
    x = 65,358,527.70/8,905.23
  6. Step 6: Final answer
    x = 7,339.34

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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.