Home / 4,140.60-6,212.43-1,920.51

Finding the Fourth Proportional to 4,140.60, 6,212.43 and 1,920.51

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Solution

The fourth proportional to 4,140.60, 6,212.43 and 1,920.51 is: 2,881.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.60 : 6,212.43 = 1,920.51 : x
  2. Step 2: Convert to fraction form
    4,140.60/6,212.43 = 1,920.51/x
  3. Step 3: Cross multiply
    4,140.60x = 6,212.43 × 1,920.51
  4. Step 4: Simplify right side
    4,140.60x = 11,931,033.94
  5. Step 5: Solve for x
    x = 11,931,033.94/4,140.60
  6. Step 6: Final answer
    x = 2,881.47

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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.