Home / 1,980.52-2,732.58-1,282.60

Finding the Fourth Proportional to 1,980.52, 2,732.58 and 1,282.60

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Solution

The fourth proportional to 1,980.52, 2,732.58 and 1,282.60 is: 1,769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.52 : 2,732.58 = 1,282.60 : x
  2. Step 2: Convert to fraction form
    1,980.52/2,732.58 = 1,282.60/x
  3. Step 3: Cross multiply
    1,980.52x = 2,732.58 × 1,282.60
  4. Step 4: Simplify right side
    1,980.52x = 3,504,807.11
  5. Step 5: Solve for x
    x = 3,504,807.11/1,980.52
  6. Step 6: Final answer
    x = 1,769.64

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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.