Home / 7,214.67-10,821.40-2,020.55

Finding the Fourth Proportional to 7,214.67, 10,821.40 and 2,020.55

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Solution

The fourth proportional to 7,214.67, 10,821.40 and 2,020.55 is: 3,030.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,214.67 : 10,821.40 = 2,020.55 : x
  2. Step 2: Convert to fraction form
    7,214.67/10,821.40 = 2,020.55/x
  3. Step 3: Cross multiply
    7,214.67x = 10,821.40 × 2,020.55
  4. Step 4: Simplify right side
    7,214.67x = 21,865,120.61
  5. Step 5: Solve for x
    x = 21,865,120.61/7,214.67
  6. Step 6: Final answer
    x = 3,030.65

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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.