Home / 8,108.40-12,133.80-5,631.60

Finding the Fourth Proportional to 8,108.40, 12,133.80 and 5,631.60

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Solution

The fourth proportional to 8,108.40, 12,133.80 and 5,631.60 is: 8,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.40 : 12,133.80 = 5,631.60 : x
  2. Step 2: Convert to fraction form
    8,108.40/12,133.80 = 5,631.60/x
  3. Step 3: Cross multiply
    8,108.40x = 12,133.80 × 5,631.60
  4. Step 4: Simplify right side
    8,108.40x = 68,332,708.08
  5. Step 5: Solve for x
    x = 68,332,708.08/8,108.40
  6. Step 6: Final answer
    x = 8,427.40

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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.