Home / 8,682.48-11,982.12-5,278.35

Finding the Fourth Proportional to 8,682.48, 11,982.12 and 5,278.35

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Solution

The fourth proportional to 8,682.48, 11,982.12 and 5,278.35 is: 7,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.48 : 11,982.12 = 5,278.35 : x
  2. Step 2: Convert to fraction form
    8,682.48/11,982.12 = 5,278.35/x
  3. Step 3: Cross multiply
    8,682.48x = 11,982.12 × 5,278.35
  4. Step 4: Simplify right side
    8,682.48x = 63,245,823.10
  5. Step 5: Solve for x
    x = 63,245,823.10/8,682.48
  6. Step 6: Final answer
    x = 7,284.30

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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.