Home / 8,451.14-12,678.60-2,607.80

Finding the Fourth Proportional to 8,451.14, 12,678.60 and 2,607.80

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Solution

The fourth proportional to 8,451.14, 12,678.60 and 2,607.80 is: 3,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.14 : 12,678.60 = 2,607.80 : x
  2. Step 2: Convert to fraction form
    8,451.14/12,678.60 = 2,607.80/x
  3. Step 3: Cross multiply
    8,451.14x = 12,678.60 × 2,607.80
  4. Step 4: Simplify right side
    8,451.14x = 33,063,253.08
  5. Step 5: Solve for x
    x = 33,063,253.08/8,451.14
  6. Step 6: Final answer
    x = 3,912.28

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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.