Home / 7,661.21-11,488.85-2,980.60

Finding the Fourth Proportional to 7,661.21, 11,488.85 and 2,980.60

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Solution

The fourth proportional to 7,661.21, 11,488.85 and 2,980.60 is: 4,469.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.21 : 11,488.85 = 2,980.60 : x
  2. Step 2: Convert to fraction form
    7,661.21/11,488.85 = 2,980.60/x
  3. Step 3: Cross multiply
    7,661.21x = 11,488.85 × 2,980.60
  4. Step 4: Simplify right side
    7,661.21x = 34,243,622.68
  5. Step 5: Solve for x
    x = 34,243,622.68/7,661.21
  6. Step 6: Final answer
    x = 4,469.74

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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.