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Finding the Fourth Proportional to 7,775.99, 11,660.55 and 2,228.07

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Solution

The fourth proportional to 7,775.99, 11,660.55 and 2,228.07 is: 3,341.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.99 : 11,660.55 = 2,228.07 : x
  2. Step 2: Convert to fraction form
    7,775.99/11,660.55 = 2,228.07/x
  3. Step 3: Cross multiply
    7,775.99x = 11,660.55 × 2,228.07
  4. Step 4: Simplify right side
    7,775.99x = 25,980,521.64
  5. Step 5: Solve for x
    x = 25,980,521.64/7,775.99
  6. Step 6: Final answer
    x = 3,341.12

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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.