Home / 1,980.98-2,728.18-1,937.93

Finding the Fourth Proportional to 1,980.98, 2,728.18 and 1,937.93

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Solution

The fourth proportional to 1,980.98, 2,728.18 and 1,937.93 is: 2,668.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.98 : 2,728.18 = 1,937.93 : x
  2. Step 2: Convert to fraction form
    1,980.98/2,728.18 = 1,937.93/x
  3. Step 3: Cross multiply
    1,980.98x = 2,728.18 × 1,937.93
  4. Step 4: Simplify right side
    1,980.98x = 5,287,021.87
  5. Step 5: Solve for x
    x = 5,287,021.87/1,980.98
  6. Step 6: Final answer
    x = 2,668.89

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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.