Home / 2,622.12-3,930.66-889.50

Finding the Fourth Proportional to 2,622.12, 3,930.66 and 889.50

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Solution

The fourth proportional to 2,622.12, 3,930.66 and 889.50 is: 1,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.12 : 3,930.66 = 889.50 : x
  2. Step 2: Convert to fraction form
    2,622.12/3,930.66 = 889.50/x
  3. Step 3: Cross multiply
    2,622.12x = 3,930.66 × 889.50
  4. Step 4: Simplify right side
    2,622.12x = 3,496,322.07
  5. Step 5: Solve for x
    x = 3,496,322.07/2,622.12
  6. Step 6: Final answer
    x = 1,333.40

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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.