Home / 2,889.42-3,985.65-1,842.09

Finding the Fourth Proportional to 2,889.42, 3,985.65 and 1,842.09

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Solution

The fourth proportional to 2,889.42, 3,985.65 and 1,842.09 is: 2,540.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.42 : 3,985.65 = 1,842.09 : x
  2. Step 2: Convert to fraction form
    2,889.42/3,985.65 = 1,842.09/x
  3. Step 3: Cross multiply
    2,889.42x = 3,985.65 × 1,842.09
  4. Step 4: Simplify right side
    2,889.42x = 7,341,926.01
  5. Step 5: Solve for x
    x = 7,341,926.01/2,889.42
  6. Step 6: Final answer
    x = 2,540.97

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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.