Home / 8,211.12-12,318.08-3,280.96

Finding the Fourth Proportional to 8,211.12, 12,318.08 and 3,280.96

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Solution

The fourth proportional to 8,211.12, 12,318.08 and 3,280.96 is: 4,922.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.12 : 12,318.08 = 3,280.96 : x
  2. Step 2: Convert to fraction form
    8,211.12/12,318.08 = 3,280.96/x
  3. Step 3: Cross multiply
    8,211.12x = 12,318.08 × 3,280.96
  4. Step 4: Simplify right side
    8,211.12x = 40,415,127.76
  5. Step 5: Solve for x
    x = 40,415,127.76/8,211.12
  6. Step 6: Final answer
    x = 4,922.00

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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.