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Finding the Fourth Proportional to 4,798.09, 6,619.78 and 2,807.21

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Solution

The fourth proportional to 4,798.09, 6,619.78 and 2,807.21 is: 3,873.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,798.09 : 6,619.78 = 2,807.21 : x
  2. Step 2: Convert to fraction form
    4,798.09/6,619.78 = 2,807.21/x
  3. Step 3: Cross multiply
    4,798.09x = 6,619.78 × 2,807.21
  4. Step 4: Simplify right side
    4,798.09x = 18,583,079.65
  5. Step 5: Solve for x
    x = 18,583,079.65/4,798.09
  6. Step 6: Final answer
    x = 3,873.02

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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.