Home / 6,889.11-9,507.50-3,905.47

Finding the Fourth Proportional to 6,889.11, 9,507.50 and 3,905.47

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Solution

The fourth proportional to 6,889.11, 9,507.50 and 3,905.47 is: 5,389.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.11 : 9,507.50 = 3,905.47 : x
  2. Step 2: Convert to fraction form
    6,889.11/9,507.50 = 3,905.47/x
  3. Step 3: Cross multiply
    6,889.11x = 9,507.50 × 3,905.47
  4. Step 4: Simplify right side
    6,889.11x = 37,131,256.03
  5. Step 5: Solve for x
    x = 37,131,256.03/6,889.11
  6. Step 6: Final answer
    x = 5,389.85

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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.