Home / 2,976.13-4,106.05-1,928.40

Finding the Fourth Proportional to 2,976.13, 4,106.05 and 1,928.40

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Solution

The fourth proportional to 2,976.13, 4,106.05 and 1,928.40 is: 2,660.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.13 : 4,106.05 = 1,928.40 : x
  2. Step 2: Convert to fraction form
    2,976.13/4,106.05 = 1,928.40/x
  3. Step 3: Cross multiply
    2,976.13x = 4,106.05 × 1,928.40
  4. Step 4: Simplify right side
    2,976.13x = 7,918,106.82
  5. Step 5: Solve for x
    x = 7,918,106.82/2,976.13
  6. Step 6: Final answer
    x = 2,660.54

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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.