Home / 2,611.49-3,917.43-1,130.81

Finding the Fourth Proportional to 2,611.49, 3,917.43 and 1,130.81

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Solution

The fourth proportional to 2,611.49, 3,917.43 and 1,130.81 is: 1,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.49 : 3,917.43 = 1,130.81 : x
  2. Step 2: Convert to fraction form
    2,611.49/3,917.43 = 1,130.81/x
  3. Step 3: Cross multiply
    2,611.49x = 3,917.43 × 1,130.81
  4. Step 4: Simplify right side
    2,611.49x = 4,429,849.43
  5. Step 5: Solve for x
    x = 4,429,849.43/2,611.49
  6. Step 6: Final answer
    x = 1,696.30

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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.