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Finding the Fourth Proportional to 8,219.95, 12,344.74 and 7,560.68

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Solution

The fourth proportional to 8,219.95, 12,344.74 and 7,560.68 is: 11,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.95 : 12,344.74 = 7,560.68 : x
  2. Step 2: Convert to fraction form
    8,219.95/12,344.74 = 7,560.68/x
  3. Step 3: Cross multiply
    8,219.95x = 12,344.74 × 7,560.68
  4. Step 4: Simplify right side
    8,219.95x = 93,334,548.20
  5. Step 5: Solve for x
    x = 93,334,548.20/8,219.95
  6. Step 6: Final answer
    x = 11,354.64

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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.