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Finding the Fourth Proportional to 6,668.51, 10,003.25 and 1,988.15

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Solution

The fourth proportional to 6,668.51, 10,003.25 and 1,988.15 is: 2,982.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668.51 : 10,003.25 = 1,988.15 : x
  2. Step 2: Convert to fraction form
    6,668.51/10,003.25 = 1,988.15/x
  3. Step 3: Cross multiply
    6,668.51x = 10,003.25 × 1,988.15
  4. Step 4: Simplify right side
    6,668.51x = 19,887,991.47
  5. Step 5: Solve for x
    x = 19,887,991.47/6,668.51
  6. Step 6: Final answer
    x = 2,982.38

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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.