Home / 8,862.20-13,267.70-7,940.60

Finding the Fourth Proportional to 8,862.20, 13,267.70 and 7,940.60

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Solution

The fourth proportional to 8,862.20, 13,267.70 and 7,940.60 is: 11,887.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.20 : 13,267.70 = 7,940.60 : x
  2. Step 2: Convert to fraction form
    8,862.20/13,267.70 = 7,940.60/x
  3. Step 3: Cross multiply
    8,862.20x = 13,267.70 × 7,940.60
  4. Step 4: Simplify right side
    8,862.20x = 105,353,498.62
  5. Step 5: Solve for x
    x = 105,353,498.62/8,862.20
  6. Step 6: Final answer
    x = 11,887.96

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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.