Home / 7,211.07-10,815.68-2,281.21

Finding the Fourth Proportional to 7,211.07, 10,815.68 and 2,281.21

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Solution

The fourth proportional to 7,211.07, 10,815.68 and 2,281.21 is: 3,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.07 : 10,815.68 = 2,281.21 : x
  2. Step 2: Convert to fraction form
    7,211.07/10,815.68 = 2,281.21/x
  3. Step 3: Cross multiply
    7,211.07x = 10,815.68 × 2,281.21
  4. Step 4: Simplify right side
    7,211.07x = 24,672,771.89
  5. Step 5: Solve for x
    x = 24,672,771.89/7,211.07
  6. Step 6: Final answer
    x = 3,421.51

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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.