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Finding the Fourth Proportional to 8,838.76, 12,216.99 and 7,768.50

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Solution

The fourth proportional to 8,838.76, 12,216.99 and 7,768.50 is: 10,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,838.76 : 12,216.99 = 7,768.50 : x
  2. Step 2: Convert to fraction form
    8,838.76/12,216.99 = 7,768.50/x
  3. Step 3: Cross multiply
    8,838.76x = 12,216.99 × 7,768.50
  4. Step 4: Simplify right side
    8,838.76x = 94,907,686.82
  5. Step 5: Solve for x
    x = 94,907,686.82/8,838.76
  6. Step 6: Final answer
    x = 10,737.67

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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.