Home / 4,458.58-6,686.09-1,991.72

Finding the Fourth Proportional to 4,458.58, 6,686.09 and 1,991.72

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Solution

The fourth proportional to 4,458.58, 6,686.09 and 1,991.72 is: 2,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,458.58 : 6,686.09 = 1,991.72 : x
  2. Step 2: Convert to fraction form
    4,458.58/6,686.09 = 1,991.72/x
  3. Step 3: Cross multiply
    4,458.58x = 6,686.09 × 1,991.72
  4. Step 4: Simplify right side
    4,458.58x = 13,316,844.60
  5. Step 5: Solve for x
    x = 13,316,844.60/4,458.58
  6. Step 6: Final answer
    x = 2,986.79

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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.