Home / 2,928.75-4,040.72-2,045.04

Finding the Fourth Proportional to 2,928.75, 4,040.72 and 2,045.04

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Solution

The fourth proportional to 2,928.75, 4,040.72 and 2,045.04 is: 2,821.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.75 : 4,040.72 = 2,045.04 : x
  2. Step 2: Convert to fraction form
    2,928.75/4,040.72 = 2,045.04/x
  3. Step 3: Cross multiply
    2,928.75x = 4,040.72 × 2,045.04
  4. Step 4: Simplify right side
    2,928.75x = 8,263,439.14
  5. Step 5: Solve for x
    x = 8,263,439.14/2,928.75
  6. Step 6: Final answer
    x = 2,821.49

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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.