Home / 8,431.16-12,644.35-2,507.81

Finding the Fourth Proportional to 8,431.16, 12,644.35 and 2,507.81

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Solution

The fourth proportional to 8,431.16, 12,644.35 and 2,507.81 is: 3,761.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.16 : 12,644.35 = 2,507.81 : x
  2. Step 2: Convert to fraction form
    8,431.16/12,644.35 = 2,507.81/x
  3. Step 3: Cross multiply
    8,431.16x = 12,644.35 × 2,507.81
  4. Step 4: Simplify right side
    8,431.16x = 31,709,589.49
  5. Step 5: Solve for x
    x = 31,709,589.49/8,431.16
  6. Step 6: Final answer
    x = 3,761.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.