Home / 7,988.47-11,023.09-4,451.47

Finding the Fourth Proportional to 7,988.47, 11,023.09 and 4,451.47

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Solution

The fourth proportional to 7,988.47, 11,023.09 and 4,451.47 is: 6,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.47 : 11,023.09 = 4,451.47 : x
  2. Step 2: Convert to fraction form
    7,988.47/11,023.09 = 4,451.47/x
  3. Step 3: Cross multiply
    7,988.47x = 11,023.09 × 4,451.47
  4. Step 4: Simplify right side
    7,988.47x = 49,068,954.44
  5. Step 5: Solve for x
    x = 49,068,954.44/7,988.47
  6. Step 6: Final answer
    x = 6,142.47

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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.