Home / 8,477.24-12,715.86-3,857

Finding the Fourth Proportional to 8,477.24, 12,715.86 and 3,857

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Solution

The fourth proportional to 8,477.24, 12,715.86 and 3,857 is: 5,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.24 : 12,715.86 = 3,857 : x
  2. Step 2: Convert to fraction form
    8,477.24/12,715.86 = 3,857/x
  3. Step 3: Cross multiply
    8,477.24x = 12,715.86 × 3,857
  4. Step 4: Simplify right side
    8,477.24x = 49,045,072.02
  5. Step 5: Solve for x
    x = 49,045,072.02/8,477.24
  6. Step 6: Final answer
    x = 5,785.50

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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.