Home / 1,970.95-2,719.87-1,086.73

Finding the Fourth Proportional to 1,970.95, 2,719.87 and 1,086.73

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Solution

The fourth proportional to 1,970.95, 2,719.87 and 1,086.73 is: 1,499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.95 : 2,719.87 = 1,086.73 : x
  2. Step 2: Convert to fraction form
    1,970.95/2,719.87 = 1,086.73/x
  3. Step 3: Cross multiply
    1,970.95x = 2,719.87 × 1,086.73
  4. Step 4: Simplify right side
    1,970.95x = 2,955,764.33
  5. Step 5: Solve for x
    x = 2,955,764.33/1,970.95
  6. Step 6: Final answer
    x = 1,499.66

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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.