Home / 8,087.40-12,116.70-6,618.60

Finding the Fourth Proportional to 8,087.40, 12,116.70 and 6,618.60

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Solution

The fourth proportional to 8,087.40, 12,116.70 and 6,618.60 is: 9,916.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,087.40 : 12,116.70 = 6,618.60 : x
  2. Step 2: Convert to fraction form
    8,087.40/12,116.70 = 6,618.60/x
  3. Step 3: Cross multiply
    8,087.40x = 12,116.70 × 6,618.60
  4. Step 4: Simplify right side
    8,087.40x = 80,195,590.62
  5. Step 5: Solve for x
    x = 80,195,590.62/8,087.40
  6. Step 6: Final answer
    x = 9,916.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.