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Finding the Fourth Proportional to 8,352.15, 12,510.18 and 7,861.42

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Solution

The fourth proportional to 8,352.15, 12,510.18 and 7,861.42 is: 11,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,352.15 : 12,510.18 = 7,861.42 : x
  2. Step 2: Convert to fraction form
    8,352.15/12,510.18 = 7,861.42/x
  3. Step 3: Cross multiply
    8,352.15x = 12,510.18 × 7,861.42
  4. Step 4: Simplify right side
    8,352.15x = 98,347,794.89
  5. Step 5: Solve for x
    x = 98,347,794.89/8,352.15
  6. Step 6: Final answer
    x = 11,775.15

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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.