Home / 7,917.11-11,878.70-3,240.30

Finding the Fourth Proportional to 7,917.11, 11,878.70 and 3,240.30

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Solution

The fourth proportional to 7,917.11, 11,878.70 and 3,240.30 is: 4,861.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.11 : 11,878.70 = 3,240.30 : x
  2. Step 2: Convert to fraction form
    7,917.11/11,878.70 = 3,240.30/x
  3. Step 3: Cross multiply
    7,917.11x = 11,878.70 × 3,240.30
  4. Step 4: Simplify right side
    7,917.11x = 38,490,535.41
  5. Step 5: Solve for x
    x = 38,490,535.41/7,917.11
  6. Step 6: Final answer
    x = 4,861.69

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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.