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Finding the Fourth Proportional to 7,012.35, 9,676.87 and 3,868.47

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Solution

The fourth proportional to 7,012.35, 9,676.87 and 3,868.47 is: 5,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.35 : 9,676.87 = 3,868.47 : x
  2. Step 2: Convert to fraction form
    7,012.35/9,676.87 = 3,868.47/x
  3. Step 3: Cross multiply
    7,012.35x = 9,676.87 × 3,868.47
  4. Step 4: Simplify right side
    7,012.35x = 37,434,671.62
  5. Step 5: Solve for x
    x = 37,434,671.62/7,012.35
  6. Step 6: Final answer
    x = 5,338.39

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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.