Home / 1,918.14-2,647.88-1,491.80

Finding the Fourth Proportional to 1,918.14, 2,647.88 and 1,491.80

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Solution

The fourth proportional to 1,918.14, 2,647.88 and 1,491.80 is: 2,059.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.14 : 2,647.88 = 1,491.80 : x
  2. Step 2: Convert to fraction form
    1,918.14/2,647.88 = 1,491.80/x
  3. Step 3: Cross multiply
    1,918.14x = 2,647.88 × 1,491.80
  4. Step 4: Simplify right side
    1,918.14x = 3,950,094.14
  5. Step 5: Solve for x
    x = 3,950,094.14/1,918.14
  6. Step 6: Final answer
    x = 2,059.34

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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.