Home / 3,511.56-5,268.12-1,320.31

Finding the Fourth Proportional to 3,511.56, 5,268.12 and 1,320.31

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Solution

The fourth proportional to 3,511.56, 5,268.12 and 1,320.31 is: 1,980.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.56 : 5,268.12 = 1,320.31 : x
  2. Step 2: Convert to fraction form
    3,511.56/5,268.12 = 1,320.31/x
  3. Step 3: Cross multiply
    3,511.56x = 5,268.12 × 1,320.31
  4. Step 4: Simplify right side
    3,511.56x = 6,955,530.94
  5. Step 5: Solve for x
    x = 6,955,530.94/3,511.56
  6. Step 6: Final answer
    x = 1,980.75

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1.5x scale

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.