Home / 2,070.37-2,855.82-1,821.70

Finding the Fourth Proportional to 2,070.37, 2,855.82 and 1,821.70

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Solution

The fourth proportional to 2,070.37, 2,855.82 and 1,821.70 is: 2,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.37 : 2,855.82 = 1,821.70 : x
  2. Step 2: Convert to fraction form
    2,070.37/2,855.82 = 1,821.70/x
  3. Step 3: Cross multiply
    2,070.37x = 2,855.82 × 1,821.70
  4. Step 4: Simplify right side
    2,070.37x = 5,202,447.29
  5. Step 5: Solve for x
    x = 5,202,447.29/2,070.37
  6. Step 6: Final answer
    x = 2,512.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.