Home / 1,958.85-2,940.84-1,312.47

Finding the Fourth Proportional to 1,958.85, 2,940.84 and 1,312.47

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Solution

The fourth proportional to 1,958.85, 2,940.84 and 1,312.47 is: 1,970.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.85 : 2,940.84 = 1,312.47 : x
  2. Step 2: Convert to fraction form
    1,958.85/2,940.84 = 1,312.47/x
  3. Step 3: Cross multiply
    1,958.85x = 2,940.84 × 1,312.47
  4. Step 4: Simplify right side
    1,958.85x = 3,859,764.27
  5. Step 5: Solve for x
    x = 3,859,764.27/1,958.85
  6. Step 6: Final answer
    x = 1,970.42

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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.