Home / 1,970.46-2,719.31-1,086.35

Finding the Fourth Proportional to 1,970.46, 2,719.31 and 1,086.35

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Solution

The fourth proportional to 1,970.46, 2,719.31 and 1,086.35 is: 1,499.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.46 : 2,719.31 = 1,086.35 : x
  2. Step 2: Convert to fraction form
    1,970.46/2,719.31 = 1,086.35/x
  3. Step 3: Cross multiply
    1,970.46x = 2,719.31 × 1,086.35
  4. Step 4: Simplify right side
    1,970.46x = 2,954,103.39
  5. Step 5: Solve for x
    x = 2,954,103.39/1,970.46
  6. Step 6: Final answer
    x = 1,499.19

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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.