Home / 8,611.12-11,880.30-4,885.12

Finding the Fourth Proportional to 8,611.12, 11,880.30 and 4,885.12

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Solution

The fourth proportional to 8,611.12, 11,880.30 and 4,885.12 is: 6,739.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.12 : 11,880.30 = 4,885.12 : x
  2. Step 2: Convert to fraction form
    8,611.12/11,880.30 = 4,885.12/x
  3. Step 3: Cross multiply
    8,611.12x = 11,880.30 × 4,885.12
  4. Step 4: Simplify right side
    8,611.12x = 58,036,691.14
  5. Step 5: Solve for x
    x = 58,036,691.14/8,611.12
  6. Step 6: Final answer
    x = 6,739.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.