Home / 2,087.85-2,881.26-1,143.66

Finding the Fourth Proportional to 2,087.85, 2,881.26 and 1,143.66

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Solution

The fourth proportional to 2,087.85, 2,881.26 and 1,143.66 is: 1,578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.85 : 2,881.26 = 1,143.66 : x
  2. Step 2: Convert to fraction form
    2,087.85/2,881.26 = 1,143.66/x
  3. Step 3: Cross multiply
    2,087.85x = 2,881.26 × 1,143.66
  4. Step 4: Simplify right side
    2,087.85x = 3,295,181.81
  5. Step 5: Solve for x
    x = 3,295,181.81/2,087.85
  6. Step 6: Final answer
    x = 1,578.27

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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.