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Finding the Fourth Proportional to 9,206.40, 13,811.40 and 3,658.80

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Solution

The fourth proportional to 9,206.40, 13,811.40 and 3,658.80 is: 5,488.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,206.40 : 13,811.40 = 3,658.80 : x
  2. Step 2: Convert to fraction form
    9,206.40/13,811.40 = 3,658.80/x
  3. Step 3: Cross multiply
    9,206.40x = 13,811.40 × 3,658.80
  4. Step 4: Simplify right side
    9,206.40x = 50,533,150.32
  5. Step 5: Solve for x
    x = 50,533,150.32/9,206.40
  6. Step 6: Final answer
    x = 5,488.92

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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.