Home / 1,858.14-2,782.55-1,240.11

Finding the Fourth Proportional to 1,858.14, 2,782.55 and 1,240.11

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Solution

The fourth proportional to 1,858.14, 2,782.55 and 1,240.11 is: 1,857.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.14 : 2,782.55 = 1,240.11 : x
  2. Step 2: Convert to fraction form
    1,858.14/2,782.55 = 1,240.11/x
  3. Step 3: Cross multiply
    1,858.14x = 2,782.55 × 1,240.11
  4. Step 4: Simplify right side
    1,858.14x = 3,450,671.18
  5. Step 5: Solve for x
    x = 3,450,671.18/1,858.14
  6. Step 6: Final answer
    x = 1,857.06

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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.