Home / 8,109.40-12,155.70-4,403.80

Finding the Fourth Proportional to 8,109.40, 12,155.70 and 4,403.80

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Solution

The fourth proportional to 8,109.40, 12,155.70 and 4,403.80 is: 6,601.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.40 : 12,155.70 = 4,403.80 : x
  2. Step 2: Convert to fraction form
    8,109.40/12,155.70 = 4,403.80/x
  3. Step 3: Cross multiply
    8,109.40x = 12,155.70 × 4,403.80
  4. Step 4: Simplify right side
    8,109.40x = 53,531,271.66
  5. Step 5: Solve for x
    x = 53,531,271.66/8,109.40
  6. Step 6: Final answer
    x = 6,601.14

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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.