Home / 2,770.81-4,158.71-1,879.18

Finding the Fourth Proportional to 2,770.81, 4,158.71 and 1,879.18

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Solution

The fourth proportional to 2,770.81, 4,158.71 and 1,879.18 is: 2,820.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.81 : 4,158.71 = 1,879.18 : x
  2. Step 2: Convert to fraction form
    2,770.81/4,158.71 = 1,879.18/x
  3. Step 3: Cross multiply
    2,770.81x = 4,158.71 × 1,879.18
  4. Step 4: Simplify right side
    2,770.81x = 7,814,964.66
  5. Step 5: Solve for x
    x = 7,814,964.66/2,770.81
  6. Step 6: Final answer
    x = 2,820.46

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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.