Home / 2,813.61-4,220.60-1,170.29

Finding the Fourth Proportional to 2,813.61, 4,220.60 and 1,170.29

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Solution

The fourth proportional to 2,813.61, 4,220.60 and 1,170.29 is: 1,755.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.61 : 4,220.60 = 1,170.29 : x
  2. Step 2: Convert to fraction form
    2,813.61/4,220.60 = 1,170.29/x
  3. Step 3: Cross multiply
    2,813.61x = 4,220.60 × 1,170.29
  4. Step 4: Simplify right side
    2,813.61x = 4,939,325.97
  5. Step 5: Solve for x
    x = 4,939,325.97/2,813.61
  6. Step 6: Final answer
    x = 1,755.51

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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.