Home / 1,970.88-2,936.40-1,872.96

Finding the Fourth Proportional to 1,970.88, 2,936.40 and 1,872.96

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Solution

The fourth proportional to 1,970.88, 2,936.40 and 1,872.96 is: 2,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.88 : 2,936.40 = 1,872.96 : x
  2. Step 2: Convert to fraction form
    1,970.88/2,936.40 = 1,872.96/x
  3. Step 3: Cross multiply
    1,970.88x = 2,936.40 × 1,872.96
  4. Step 4: Simplify right side
    1,970.88x = 5,499,759.74
  5. Step 5: Solve for x
    x = 5,499,759.74/1,970.88
  6. Step 6: Final answer
    x = 2,790.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.