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Finding the Fourth Proportional to 8,772.74, 12,106.36 and 4,995.70

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Solution

The fourth proportional to 8,772.74, 12,106.36 and 4,995.70 is: 6,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.74 : 12,106.36 = 4,995.70 : x
  2. Step 2: Convert to fraction form
    8,772.74/12,106.36 = 4,995.70/x
  3. Step 3: Cross multiply
    8,772.74x = 12,106.36 × 4,995.70
  4. Step 4: Simplify right side
    8,772.74x = 60,479,742.65
  5. Step 5: Solve for x
    x = 60,479,742.65/8,772.74
  6. Step 6: Final answer
    x = 6,894.05

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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.