Home / 3,528.81-4,869.40-2,112.21

Finding the Fourth Proportional to 3,528.81, 4,869.40 and 2,112.21

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Solution

The fourth proportional to 3,528.81, 4,869.40 and 2,112.21 is: 2,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,528.81 : 4,869.40 = 2,112.21 : x
  2. Step 2: Convert to fraction form
    3,528.81/4,869.40 = 2,112.21/x
  3. Step 3: Cross multiply
    3,528.81x = 4,869.40 × 2,112.21
  4. Step 4: Simplify right side
    3,528.81x = 10,285,195.37
  5. Step 5: Solve for x
    x = 10,285,195.37/3,528.81
  6. Step 6: Final answer
    x = 2,914.64

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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.