Home / 2,807.45-3,873.96-1,628.31

Finding the Fourth Proportional to 2,807.45, 3,873.96 and 1,628.31

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Solution

The fourth proportional to 2,807.45, 3,873.96 and 1,628.31 is: 2,246.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.45 : 3,873.96 = 1,628.31 : x
  2. Step 2: Convert to fraction form
    2,807.45/3,873.96 = 1,628.31/x
  3. Step 3: Cross multiply
    2,807.45x = 3,873.96 × 1,628.31
  4. Step 4: Simplify right side
    2,807.45x = 6,308,007.81
  5. Step 5: Solve for x
    x = 6,308,007.81/2,807.45
  6. Step 6: Final answer
    x = 2,246.89

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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.