Home / 3,945.84-5,917.37-1,312.63

Finding the Fourth Proportional to 3,945.84, 5,917.37 and 1,312.63

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Solution

The fourth proportional to 3,945.84, 5,917.37 and 1,312.63 is: 1,968.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.84 : 5,917.37 = 1,312.63 : x
  2. Step 2: Convert to fraction form
    3,945.84/5,917.37 = 1,312.63/x
  3. Step 3: Cross multiply
    3,945.84x = 5,917.37 × 1,312.63
  4. Step 4: Simplify right side
    3,945.84x = 7,767,317.38
  5. Step 5: Solve for x
    x = 7,767,317.38/3,945.84
  6. Step 6: Final answer
    x = 1,968.48

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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.