Home / 8,078.40-12,088.80-5,601.60

Finding the Fourth Proportional to 8,078.40, 12,088.80 and 5,601.60

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Solution

The fourth proportional to 8,078.40, 12,088.80 and 5,601.60 is: 8,382.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.40 : 12,088.80 = 5,601.60 : x
  2. Step 2: Convert to fraction form
    8,078.40/12,088.80 = 5,601.60/x
  3. Step 3: Cross multiply
    8,078.40x = 12,088.80 × 5,601.60
  4. Step 4: Simplify right side
    8,078.40x = 67,716,622.08
  5. Step 5: Solve for x
    x = 67,716,622.08/8,078.40
  6. Step 6: Final answer
    x = 8,382.43

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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.