Home / 8,578.18-11,821.71-6,874.75

Finding the Fourth Proportional to 8,578.18, 11,821.71 and 6,874.75

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Solution

The fourth proportional to 8,578.18, 11,821.71 and 6,874.75 is: 9,474.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.18 : 11,821.71 = 6,874.75 : x
  2. Step 2: Convert to fraction form
    8,578.18/11,821.71 = 6,874.75/x
  3. Step 3: Cross multiply
    8,578.18x = 11,821.71 × 6,874.75
  4. Step 4: Simplify right side
    8,578.18x = 81,271,300.82
  5. Step 5: Solve for x
    x = 81,271,300.82/8,578.18
  6. Step 6: Final answer
    x = 9,474.19

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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.