Home / 1,970.53-2,719.38-1,086.43

Finding the Fourth Proportional to 1,970.53, 2,719.38 and 1,086.43

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Solution

The fourth proportional to 1,970.53, 2,719.38 and 1,086.43 is: 1,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.53 : 2,719.38 = 1,086.43 : x
  2. Step 2: Convert to fraction form
    1,970.53/2,719.38 = 1,086.43/x
  3. Step 3: Cross multiply
    1,970.53x = 2,719.38 × 1,086.43
  4. Step 4: Simplify right side
    1,970.53x = 2,954,416.01
  5. Step 5: Solve for x
    x = 2,954,416.01/1,970.53
  6. Step 6: Final answer
    x = 1,499.30

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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.