Home / 7,770.21-11,653.63-2,222.05

Finding the Fourth Proportional to 7,770.21, 11,653.63 and 2,222.05

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Solution

The fourth proportional to 7,770.21, 11,653.63 and 2,222.05 is: 3,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.21 : 11,653.63 = 2,222.05 : x
  2. Step 2: Convert to fraction form
    7,770.21/11,653.63 = 2,222.05/x
  3. Step 3: Cross multiply
    7,770.21x = 11,653.63 × 2,222.05
  4. Step 4: Simplify right side
    7,770.21x = 25,894,948.54
  5. Step 5: Solve for x
    x = 25,894,948.54/7,770.21
  6. Step 6: Final answer
    x = 3,332.59

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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.