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Finding the Fourth Proportional to 8,720.46, 12,033.84 and 4,943.40

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Solution

The fourth proportional to 8,720.46, 12,033.84 and 4,943.40 is: 6,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.46 : 12,033.84 = 4,943.40 : x
  2. Step 2: Convert to fraction form
    8,720.46/12,033.84 = 4,943.40/x
  3. Step 3: Cross multiply
    8,720.46x = 12,033.84 × 4,943.40
  4. Step 4: Simplify right side
    8,720.46x = 59,488,084.66
  5. Step 5: Solve for x
    x = 59,488,084.66/8,720.46
  6. Step 6: Final answer
    x = 6,821.67

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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.