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Finding the Fourth Proportional to 6,615.67, 9,926.99 and 2,920.45

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Solution

The fourth proportional to 6,615.67, 9,926.99 and 2,920.45 is: 4,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.67 : 9,926.99 = 2,920.45 : x
  2. Step 2: Convert to fraction form
    6,615.67/9,926.99 = 2,920.45/x
  3. Step 3: Cross multiply
    6,615.67x = 9,926.99 × 2,920.45
  4. Step 4: Simplify right side
    6,615.67x = 28,991,277.95
  5. Step 5: Solve for x
    x = 28,991,277.95/6,615.67
  6. Step 6: Final answer
    x = 4,382.21

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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.