Home / 2,775.80-4,164.90-2,158.58

Finding the Fourth Proportional to 2,775.80, 4,164.90 and 2,158.58

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Solution

The fourth proportional to 2,775.80, 4,164.90 and 2,158.58 is: 3,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.80 : 4,164.90 = 2,158.58 : x
  2. Step 2: Convert to fraction form
    2,775.80/4,164.90 = 2,158.58/x
  3. Step 3: Cross multiply
    2,775.80x = 4,164.90 × 2,158.58
  4. Step 4: Simplify right side
    2,775.80x = 8,990,269.84
  5. Step 5: Solve for x
    x = 8,990,269.84/2,775.80
  6. Step 6: Final answer
    x = 3,238.80

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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.