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Finding the Fourth Proportional to 8,283.69, 11,429.87 and 4,649.87

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Solution

The fourth proportional to 8,283.69, 11,429.87 and 4,649.87 is: 6,415.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,283.69 : 11,429.87 = 4,649.87 : x
  2. Step 2: Convert to fraction form
    8,283.69/11,429.87 = 4,649.87/x
  3. Step 3: Cross multiply
    8,283.69x = 11,429.87 × 4,649.87
  4. Step 4: Simplify right side
    8,283.69x = 53,147,329.22
  5. Step 5: Solve for x
    x = 53,147,329.22/8,283.69
  6. Step 6: Final answer
    x = 6,415.90

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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.