Home / 1,984.40-2,972.73-1,059.64

Finding the Fourth Proportional to 1,984.40, 2,972.73 and 1,059.64

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Solution

The fourth proportional to 1,984.40, 2,972.73 and 1,059.64 is: 1,587.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.40 : 2,972.73 = 1,059.64 : x
  2. Step 2: Convert to fraction form
    1,984.40/2,972.73 = 1,059.64/x
  3. Step 3: Cross multiply
    1,984.40x = 2,972.73 × 1,059.64
  4. Step 4: Simplify right side
    1,984.40x = 3,150,020.16
  5. Step 5: Solve for x
    x = 3,150,020.16/1,984.40
  6. Step 6: Final answer
    x = 1,587.39

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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.