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Finding the Fourth Proportional to 7,988.47, 11,021.47 and 4,843.51

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Solution

The fourth proportional to 7,988.47, 11,021.47 and 4,843.51 is: 6,682.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.47 : 11,021.47 = 4,843.51 : x
  2. Step 2: Convert to fraction form
    7,988.47/11,021.47 = 4,843.51/x
  3. Step 3: Cross multiply
    7,988.47x = 11,021.47 × 4,843.51
  4. Step 4: Simplify right side
    7,988.47x = 53,382,600.16
  5. Step 5: Solve for x
    x = 53,382,600.16/7,988.47
  6. Step 6: Final answer
    x = 6,682.46

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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.