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Finding the Fourth Proportional to 6,887.84, 9,519.21 and 5,208.71

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Solution

The fourth proportional to 6,887.84, 9,519.21 and 5,208.71 is: 7,198.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,887.84 : 9,519.21 = 5,208.71 : x
  2. Step 2: Convert to fraction form
    6,887.84/9,519.21 = 5,208.71/x
  3. Step 3: Cross multiply
    6,887.84x = 9,519.21 × 5,208.71
  4. Step 4: Simplify right side
    6,887.84x = 49,582,756.72
  5. Step 5: Solve for x
    x = 49,582,756.72/6,887.84
  6. Step 6: Final answer
    x = 7,198.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.