Home / 1,970.91-2,719.88-1,273.50

Finding the Fourth Proportional to 1,970.91, 2,719.88 and 1,273.50

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Solution

The fourth proportional to 1,970.91, 2,719.88 and 1,273.50 is: 1,757.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.91 : 2,719.88 = 1,273.50 : x
  2. Step 2: Convert to fraction form
    1,970.91/2,719.88 = 1,273.50/x
  3. Step 3: Cross multiply
    1,970.91x = 2,719.88 × 1,273.50
  4. Step 4: Simplify right side
    1,970.91x = 3,463,770.36
  5. Step 5: Solve for x
    x = 3,463,770.36/1,970.91
  6. Step 6: Final answer
    x = 1,757.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.