Home / 1,427.14-2,140.19-605.47

Finding the Fourth Proportional to 1,427.14, 2,140.19 and 605.47

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Solution

The fourth proportional to 1,427.14, 2,140.19 and 605.47 is: 907.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.14 : 2,140.19 = 605.47 : x
  2. Step 2: Convert to fraction form
    1,427.14/2,140.19 = 605.47/x
  3. Step 3: Cross multiply
    1,427.14x = 2,140.19 × 605.47
  4. Step 4: Simplify right side
    1,427.14x = 1,295,820.84
  5. Step 5: Solve for x
    x = 1,295,820.84/1,427.14
  6. Step 6: Final answer
    x = 907.98

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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.