Home / 8,315.67-12,475.85-3,636.09

Finding the Fourth Proportional to 8,315.67, 12,475.85 and 3,636.09

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Solution

The fourth proportional to 8,315.67, 12,475.85 and 3,636.09 is: 5,455.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.67 : 12,475.85 = 3,636.09 : x
  2. Step 2: Convert to fraction form
    8,315.67/12,475.85 = 3,636.09/x
  3. Step 3: Cross multiply
    8,315.67x = 12,475.85 × 3,636.09
  4. Step 4: Simplify right side
    8,315.67x = 45,363,295.25
  5. Step 5: Solve for x
    x = 45,363,295.25/8,315.67
  6. Step 6: Final answer
    x = 5,455.16

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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.