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Finding the Fourth Proportional to 2,679.99, 4,019.54 and 731.76

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Solution

The fourth proportional to 2,679.99, 4,019.54 and 731.76 is: 1,097.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.99 : 4,019.54 = 731.76 : x
  2. Step 2: Convert to fraction form
    2,679.99/4,019.54 = 731.76/x
  3. Step 3: Cross multiply
    2,679.99x = 4,019.54 × 731.76
  4. Step 4: Simplify right side
    2,679.99x = 2,941,334.93
  5. Step 5: Solve for x
    x = 2,941,334.93/2,679.99
  6. Step 6: Final answer
    x = 1,097.52

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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.