Home / 2,813.85-4,219.68-1,644.25

Finding the Fourth Proportional to 2,813.85, 4,219.68 and 1,644.25

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Solution

The fourth proportional to 2,813.85, 4,219.68 and 1,644.25 is: 2,465.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.85 : 4,219.68 = 1,644.25 : x
  2. Step 2: Convert to fraction form
    2,813.85/4,219.68 = 1,644.25/x
  3. Step 3: Cross multiply
    2,813.85x = 4,219.68 × 1,644.25
  4. Step 4: Simplify right side
    2,813.85x = 6,938,208.84
  5. Step 5: Solve for x
    x = 6,938,208.84/2,813.85
  6. Step 6: Final answer
    x = 2,465.74

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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.