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Finding the Fourth Proportional to 8,470.80, 12,706.92 and 3,852.72

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Solution

The fourth proportional to 8,470.80, 12,706.92 and 3,852.72 is: 5,779.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.80 : 12,706.92 = 3,852.72 : x
  2. Step 2: Convert to fraction form
    8,470.80/12,706.92 = 3,852.72/x
  3. Step 3: Cross multiply
    8,470.80x = 12,706.92 × 3,852.72
  4. Step 4: Simplify right side
    8,470.80x = 48,956,204.82
  5. Step 5: Solve for x
    x = 48,956,204.82/8,470.80
  6. Step 6: Final answer
    x = 5,779.41

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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.