Home / 1,980.37-2,735.94-1,316.98

Finding the Fourth Proportional to 1,980.37, 2,735.94 and 1,316.98

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Solution

The fourth proportional to 1,980.37, 2,735.94 and 1,316.98 is: 1,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.37 : 2,735.94 = 1,316.98 : x
  2. Step 2: Convert to fraction form
    1,980.37/2,735.94 = 1,316.98/x
  3. Step 3: Cross multiply
    1,980.37x = 2,735.94 × 1,316.98
  4. Step 4: Simplify right side
    1,980.37x = 3,603,178.26
  5. Step 5: Solve for x
    x = 3,603,178.26/1,980.37
  6. Step 6: Final answer
    x = 1,819.45

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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.