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Finding the Fourth Proportional to 8,865.85, 12,234.80 and 5,089.63

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Solution

The fourth proportional to 8,865.85, 12,234.80 and 5,089.63 is: 7,023.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.85 : 12,234.80 = 5,089.63 : x
  2. Step 2: Convert to fraction form
    8,865.85/12,234.80 = 5,089.63/x
  3. Step 3: Cross multiply
    8,865.85x = 12,234.80 × 5,089.63
  4. Step 4: Simplify right side
    8,865.85x = 62,270,549.09
  5. Step 5: Solve for x
    x = 62,270,549.09/8,865.85
  6. Step 6: Final answer
    x = 7,023.64

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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.