Home / 1,356.12-2,030.58-1,080.36

Finding the Fourth Proportional to 1,356.12, 2,030.58 and 1,080.36

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Solution

The fourth proportional to 1,356.12, 2,030.58 and 1,080.36 is: 1,617.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.12 : 2,030.58 = 1,080.36 : x
  2. Step 2: Convert to fraction form
    1,356.12/2,030.58 = 1,080.36/x
  3. Step 3: Cross multiply
    1,356.12x = 2,030.58 × 1,080.36
  4. Step 4: Simplify right side
    1,356.12x = 2,193,757.41
  5. Step 5: Solve for x
    x = 2,193,757.41/1,356.12
  6. Step 6: Final answer
    x = 1,617.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.