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Finding the Fourth Proportional to 4,891.86, 7,338.99 and 2,291.76

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Solution

The fourth proportional to 4,891.86, 7,338.99 and 2,291.76 is: 3,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.86 : 7,338.99 = 2,291.76 : x
  2. Step 2: Convert to fraction form
    4,891.86/7,338.99 = 2,291.76/x
  3. Step 3: Cross multiply
    4,891.86x = 7,338.99 × 2,291.76
  4. Step 4: Simplify right side
    4,891.86x = 16,819,203.72
  5. Step 5: Solve for x
    x = 16,819,203.72/4,891.86
  6. Step 6: Final answer
    x = 3,438.20

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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.