Home / 3,984.60-5,973.12-1,386.84

Finding the Fourth Proportional to 3,984.60, 5,973.12 and 1,386.84

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Solution

The fourth proportional to 3,984.60, 5,973.12 and 1,386.84 is: 2,078.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.60 : 5,973.12 = 1,386.84 : x
  2. Step 2: Convert to fraction form
    3,984.60/5,973.12 = 1,386.84/x
  3. Step 3: Cross multiply
    3,984.60x = 5,973.12 × 1,386.84
  4. Step 4: Simplify right side
    3,984.60x = 8,283,761.74
  5. Step 5: Solve for x
    x = 8,283,761.74/3,984.60
  6. Step 6: Final answer
    x = 2,078.94

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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.