Home / 6,431.17-8,875.37-3,912.88

Finding the Fourth Proportional to 6,431.17, 8,875.37 and 3,912.88

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Solution

The fourth proportional to 6,431.17, 8,875.37 and 3,912.88 is: 5,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.17 : 8,875.37 = 3,912.88 : x
  2. Step 2: Convert to fraction form
    6,431.17/8,875.37 = 3,912.88/x
  3. Step 3: Cross multiply
    6,431.17x = 8,875.37 × 3,912.88
  4. Step 4: Simplify right side
    6,431.17x = 34,728,257.77
  5. Step 5: Solve for x
    x = 34,728,257.77/6,431.17
  6. Step 6: Final answer
    x = 5,399.99

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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.