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Finding the Fourth Proportional to 8,728.30, 12,043.00 and 4,950.61

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Solution

The fourth proportional to 8,728.30, 12,043.00 and 4,950.61 is: 6,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.30 : 12,043.00 = 4,950.61 : x
  2. Step 2: Convert to fraction form
    8,728.30/12,043.00 = 4,950.61/x
  3. Step 3: Cross multiply
    8,728.30x = 12,043.00 × 4,950.61
  4. Step 4: Simplify right side
    8,728.30x = 59,620,153.75
  5. Step 5: Solve for x
    x = 59,620,153.75/8,728.30
  6. Step 6: Final answer
    x = 6,830.67

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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.