Home / 8,821-12,172.56-5,283.52

Finding the Fourth Proportional to 8,821, 12,172.56 and 5,283.52

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Solution

The fourth proportional to 8,821, 12,172.56 and 5,283.52 is: 7,291.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821 : 12,172.56 = 5,283.52 : x
  2. Step 2: Convert to fraction form
    8,821/12,172.56 = 5,283.52/x
  3. Step 3: Cross multiply
    8,821x = 12,172.56 × 5,283.52
  4. Step 4: Simplify right side
    8,821x = 64,313,964.21
  5. Step 5: Solve for x
    x = 64,313,964.21/8,821
  6. Step 6: Final answer
    x = 7,291.01

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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.