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Finding the Fourth Proportional to 3,999.51, 5,547.62 and 3,892.59

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Solution

The fourth proportional to 3,999.51, 5,547.62 and 3,892.59 is: 5,399.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.51 : 5,547.62 = 3,892.59 : x
  2. Step 2: Convert to fraction form
    3,999.51/5,547.62 = 3,892.59/x
  3. Step 3: Cross multiply
    3,999.51x = 5,547.62 × 3,892.59
  4. Step 4: Simplify right side
    3,999.51x = 21,594,619.87
  5. Step 5: Solve for x
    x = 21,594,619.87/3,999.51
  6. Step 6: Final answer
    x = 5,399.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.