Home / 8,428.27-12,644.92-2,505.35

Finding the Fourth Proportional to 8,428.27, 12,644.92 and 2,505.35

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Solution

The fourth proportional to 8,428.27, 12,644.92 and 2,505.35 is: 3,758.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.27 : 12,644.92 = 2,505.35 : x
  2. Step 2: Convert to fraction form
    8,428.27/12,644.92 = 2,505.35/x
  3. Step 3: Cross multiply
    8,428.27x = 12,644.92 × 2,505.35
  4. Step 4: Simplify right side
    8,428.27x = 31,679,950.32
  5. Step 5: Solve for x
    x = 31,679,950.32/8,428.27
  6. Step 6: Final answer
    x = 3,758.77

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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.