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Finding the Fourth Proportional to 2,185.51, 2,999.04 and 1,987.51

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Solution

The fourth proportional to 2,185.51, 2,999.04 and 1,987.51 is: 2,727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.51 : 2,999.04 = 1,987.51 : x
  2. Step 2: Convert to fraction form
    2,185.51/2,999.04 = 1,987.51/x
  3. Step 3: Cross multiply
    2,185.51x = 2,999.04 × 1,987.51
  4. Step 4: Simplify right side
    2,185.51x = 5,960,621.99
  5. Step 5: Solve for x
    x = 5,960,621.99/2,185.51
  6. Step 6: Final answer
    x = 2,727.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.