Home / 4,451.60-6,678.12-1,986.36

Finding the Fourth Proportional to 4,451.60, 6,678.12 and 1,986.36

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Solution

The fourth proportional to 4,451.60, 6,678.12 and 1,986.36 is: 2,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,451.60 : 6,678.12 = 1,986.36 : x
  2. Step 2: Convert to fraction form
    4,451.60/6,678.12 = 1,986.36/x
  3. Step 3: Cross multiply
    4,451.60x = 6,678.12 × 1,986.36
  4. Step 4: Simplify right side
    4,451.60x = 13,265,150.44
  5. Step 5: Solve for x
    x = 13,265,150.44/4,451.60
  6. Step 6: Final answer
    x = 2,979.86

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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.