Home / 2,813.10-4,220.55-965.40

Finding the Fourth Proportional to 2,813.10, 4,220.55 and 965.40

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Solution

The fourth proportional to 2,813.10, 4,220.55 and 965.40 is: 1,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.10 : 4,220.55 = 965.40 : x
  2. Step 2: Convert to fraction form
    2,813.10/4,220.55 = 965.40/x
  3. Step 3: Cross multiply
    2,813.10x = 4,220.55 × 965.40
  4. Step 4: Simplify right side
    2,813.10x = 4,074,518.97
  5. Step 5: Solve for x
    x = 4,074,518.97/2,813.10
  6. Step 6: Final answer
    x = 1,448.41

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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.