Home / 1,970.55-2,719.24-1,086.36

Finding the Fourth Proportional to 1,970.55, 2,719.24 and 1,086.36

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Solution

The fourth proportional to 1,970.55, 2,719.24 and 1,086.36 is: 1,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.55 : 2,719.24 = 1,086.36 : x
  2. Step 2: Convert to fraction form
    1,970.55/2,719.24 = 1,086.36/x
  3. Step 3: Cross multiply
    1,970.55x = 2,719.24 × 1,086.36
  4. Step 4: Simplify right side
    1,970.55x = 2,954,073.57
  5. Step 5: Solve for x
    x = 2,954,073.57/1,970.55
  6. Step 6: Final answer
    x = 1,499.11

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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.