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Finding the Fourth Proportional to 8,772.80, 12,106.36 and 4,793.88

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Solution

The fourth proportional to 8,772.80, 12,106.36 and 4,793.88 is: 6,615.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.80 : 12,106.36 = 4,793.88 : x
  2. Step 2: Convert to fraction form
    8,772.80/12,106.36 = 4,793.88/x
  3. Step 3: Cross multiply
    8,772.80x = 12,106.36 × 4,793.88
  4. Step 4: Simplify right side
    8,772.80x = 58,036,437.08
  5. Step 5: Solve for x
    x = 58,036,437.08/8,772.80
  6. Step 6: Final answer
    x = 6,615.50

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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.