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Finding the Fourth Proportional to 8,435.77, 12,653.48 and 2,813.85

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Solution

The fourth proportional to 8,435.77, 12,653.48 and 2,813.85 is: 4,220.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.77 : 12,653.48 = 2,813.85 : x
  2. Step 2: Convert to fraction form
    8,435.77/12,653.48 = 2,813.85/x
  3. Step 3: Cross multiply
    8,435.77x = 12,653.48 × 2,813.85
  4. Step 4: Simplify right side
    8,435.77x = 35,604,994.70
  5. Step 5: Solve for x
    x = 35,604,994.70/8,435.77
  6. Step 6: Final answer
    x = 4,220.72

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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.