Home / 8,622.16-12,930.88-2,380.68

Finding the Fourth Proportional to 8,622.16, 12,930.88 and 2,380.68

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Solution

The fourth proportional to 8,622.16, 12,930.88 and 2,380.68 is: 3,570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.16 : 12,930.88 = 2,380.68 : x
  2. Step 2: Convert to fraction form
    8,622.16/12,930.88 = 2,380.68/x
  3. Step 3: Cross multiply
    8,622.16x = 12,930.88 × 2,380.68
  4. Step 4: Simplify right side
    8,622.16x = 30,784,287.40
  5. Step 5: Solve for x
    x = 30,784,287.40/8,622.16
  6. Step 6: Final answer
    x = 3,570.37

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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.