Home / 2,891.45-4,330.69-2,240.21

Finding the Fourth Proportional to 2,891.45, 4,330.69 and 2,240.21

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Solution

The fourth proportional to 2,891.45, 4,330.69 and 2,240.21 is: 3,355.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.45 : 4,330.69 = 2,240.21 : x
  2. Step 2: Convert to fraction form
    2,891.45/4,330.69 = 2,240.21/x
  3. Step 3: Cross multiply
    2,891.45x = 4,330.69 × 2,240.21
  4. Step 4: Simplify right side
    2,891.45x = 9,701,655.04
  5. Step 5: Solve for x
    x = 9,701,655.04/2,891.45
  6. Step 6: Final answer
    x = 3,355.29

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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.