Home / 8,140.26-12,199.61-4,191.36

Finding the Fourth Proportional to 8,140.26, 12,199.61 and 4,191.36

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Solution

The fourth proportional to 8,140.26, 12,199.61 and 4,191.36 is: 6,281.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.26 : 12,199.61 = 4,191.36 : x
  2. Step 2: Convert to fraction form
    8,140.26/12,199.61 = 4,191.36/x
  3. Step 3: Cross multiply
    8,140.26x = 12,199.61 × 4,191.36
  4. Step 4: Simplify right side
    8,140.26x = 51,132,957.37
  5. Step 5: Solve for x
    x = 51,132,957.37/8,140.26
  6. Step 6: Final answer
    x = 6,281.49

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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.