Home / 8,428.21-12,631.47-6,173.85

Finding the Fourth Proportional to 8,428.21, 12,631.47 and 6,173.85

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Solution

The fourth proportional to 8,428.21, 12,631.47 and 6,173.85 is: 9,252.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.21 : 12,631.47 = 6,173.85 : x
  2. Step 2: Convert to fraction form
    8,428.21/12,631.47 = 6,173.85/x
  3. Step 3: Cross multiply
    8,428.21x = 12,631.47 × 6,173.85
  4. Step 4: Simplify right side
    8,428.21x = 77,984,801.06
  5. Step 5: Solve for x
    x = 77,984,801.06/8,428.21
  6. Step 6: Final answer
    x = 9,252.83

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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.