Home / 6,819.37-9,412.31-3,988.06

Finding the Fourth Proportional to 6,819.37, 9,412.31 and 3,988.06

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Solution

The fourth proportional to 6,819.37, 9,412.31 and 3,988.06 is: 5,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.37 : 9,412.31 = 3,988.06 : x
  2. Step 2: Convert to fraction form
    6,819.37/9,412.31 = 3,988.06/x
  3. Step 3: Cross multiply
    6,819.37x = 9,412.31 × 3,988.06
  4. Step 4: Simplify right side
    6,819.37x = 37,536,857.02
  5. Step 5: Solve for x
    x = 37,536,857.02/6,819.37
  6. Step 6: Final answer
    x = 5,504.45

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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.