Home / 7,890.96-11,817.99-6,236.40

Finding the Fourth Proportional to 7,890.96, 11,817.99 and 6,236.40

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Solution

The fourth proportional to 7,890.96, 11,817.99 and 6,236.40 is: 9,340.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.96 : 11,817.99 = 6,236.40 : x
  2. Step 2: Convert to fraction form
    7,890.96/11,817.99 = 6,236.40/x
  3. Step 3: Cross multiply
    7,890.96x = 11,817.99 × 6,236.40
  4. Step 4: Simplify right side
    7,890.96x = 73,701,712.84
  5. Step 5: Solve for x
    x = 73,701,712.84/7,890.96
  6. Step 6: Final answer
    x = 9,340.02

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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.