Home / 1,511.56-2,074.70-1,448.20

Finding the Fourth Proportional to 1,511.56, 2,074.70 and 1,448.20

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Solution

The fourth proportional to 1,511.56, 2,074.70 and 1,448.20 is: 1,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.56 : 2,074.70 = 1,448.20 : x
  2. Step 2: Convert to fraction form
    1,511.56/2,074.70 = 1,448.20/x
  3. Step 3: Cross multiply
    1,511.56x = 2,074.70 × 1,448.20
  4. Step 4: Simplify right side
    1,511.56x = 3,004,580.54
  5. Step 5: Solve for x
    x = 3,004,580.54/1,511.56
  6. Step 6: Final answer
    x = 1,987.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.