Home / 4,458.15-6,684.78-1,991.70

Finding the Fourth Proportional to 4,458.15, 6,684.78 and 1,991.70

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Solution

The fourth proportional to 4,458.15, 6,684.78 and 1,991.70 is: 2,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,458.15 : 6,684.78 = 1,991.70 : x
  2. Step 2: Convert to fraction form
    4,458.15/6,684.78 = 1,991.70/x
  3. Step 3: Cross multiply
    4,458.15x = 6,684.78 × 1,991.70
  4. Step 4: Simplify right side
    4,458.15x = 13,314,076.33
  5. Step 5: Solve for x
    x = 13,314,076.33/4,458.15
  6. Step 6: Final answer
    x = 2,986.46

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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.