Home / 3,133.20-4,706.40-2,647.20

Finding the Fourth Proportional to 3,133.20, 4,706.40 and 2,647.20

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Solution

The fourth proportional to 3,133.20, 4,706.40 and 2,647.20 is: 3,976.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.20 : 4,706.40 = 2,647.20 : x
  2. Step 2: Convert to fraction form
    3,133.20/4,706.40 = 2,647.20/x
  3. Step 3: Cross multiply
    3,133.20x = 4,706.40 × 2,647.20
  4. Step 4: Simplify right side
    3,133.20x = 12,458,782.08
  5. Step 5: Solve for x
    x = 12,458,782.08/3,133.20
  6. Step 6: Final answer
    x = 3,976.38

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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.