Home / 8,431.24-12,644.47-2,507.89

Finding the Fourth Proportional to 8,431.24, 12,644.47 and 2,507.89

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Solution

The fourth proportional to 8,431.24, 12,644.47 and 2,507.89 is: 3,761.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.24 : 12,644.47 = 2,507.89 : x
  2. Step 2: Convert to fraction form
    8,431.24/12,644.47 = 2,507.89/x
  3. Step 3: Cross multiply
    8,431.24x = 12,644.47 × 2,507.89
  4. Step 4: Simplify right side
    8,431.24x = 31,710,901.99
  5. Step 5: Solve for x
    x = 31,710,901.99/8,431.24
  6. Step 6: Final answer
    x = 3,761.12

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1.5x scale

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.