Home / 2,112.12-2,911.68-1,480.68

Finding the Fourth Proportional to 2,112.12, 2,911.68 and 1,480.68

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Solution

The fourth proportional to 2,112.12, 2,911.68 and 1,480.68 is: 2,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.12 : 2,911.68 = 1,480.68 : x
  2. Step 2: Convert to fraction form
    2,112.12/2,911.68 = 1,480.68/x
  3. Step 3: Cross multiply
    2,112.12x = 2,911.68 × 1,480.68
  4. Step 4: Simplify right side
    2,112.12x = 4,311,266.34
  5. Step 5: Solve for x
    x = 4,311,266.34/2,112.12
  6. Step 6: Final answer
    x = 2,041.20

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1.5x scale

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.