Home / 2,889.90-3,987.09-1,842.57

Finding the Fourth Proportional to 2,889.90, 3,987.09 and 1,842.57

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Solution

The fourth proportional to 2,889.90, 3,987.09 and 1,842.57 is: 2,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.90 : 3,987.09 = 1,842.57 : x
  2. Step 2: Convert to fraction form
    2,889.90/3,987.09 = 1,842.57/x
  3. Step 3: Cross multiply
    2,889.90x = 3,987.09 × 1,842.57
  4. Step 4: Simplify right side
    2,889.90x = 7,346,492.42
  5. Step 5: Solve for x
    x = 7,346,492.42/2,889.90
  6. Step 6: Final answer
    x = 2,542.13

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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.