Home / 9,311.36-12,836.40-6,657.80

Finding the Fourth Proportional to 9,311.36, 12,836.40 and 6,657.80

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Solution

The fourth proportional to 9,311.36, 12,836.40 and 6,657.80 is: 9,178.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,311.36 : 12,836.40 = 6,657.80 : x
  2. Step 2: Convert to fraction form
    9,311.36/12,836.40 = 6,657.80/x
  3. Step 3: Cross multiply
    9,311.36x = 12,836.40 × 6,657.80
  4. Step 4: Simplify right side
    9,311.36x = 85,462,183.92
  5. Step 5: Solve for x
    x = 85,462,183.92/9,311.36
  6. Step 6: Final answer
    x = 9,178.27

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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.