Home / 5,205.10-7,182.72-2,847.18

Finding the Fourth Proportional to 5,205.10, 7,182.72 and 2,847.18

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Solution

The fourth proportional to 5,205.10, 7,182.72 and 2,847.18 is: 3,928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.10 : 7,182.72 = 2,847.18 : x
  2. Step 2: Convert to fraction form
    5,205.10/7,182.72 = 2,847.18/x
  3. Step 3: Cross multiply
    5,205.10x = 7,182.72 × 2,847.18
  4. Step 4: Simplify right side
    5,205.10x = 20,450,496.73
  5. Step 5: Solve for x
    x = 20,450,496.73/5,205.10
  6. Step 6: Final answer
    x = 3,928.93

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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.