Home / 4,747.95-7,121.39-1,975.05

Finding the Fourth Proportional to 4,747.95, 7,121.39 and 1,975.05

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Solution

The fourth proportional to 4,747.95, 7,121.39 and 1,975.05 is: 2,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.95 : 7,121.39 = 1,975.05 : x
  2. Step 2: Convert to fraction form
    4,747.95/7,121.39 = 1,975.05/x
  3. Step 3: Cross multiply
    4,747.95x = 7,121.39 × 1,975.05
  4. Step 4: Simplify right side
    4,747.95x = 14,065,091.44
  5. Step 5: Solve for x
    x = 14,065,091.44/4,747.95
  6. Step 6: Final answer
    x = 2,962.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.