Home / 8,122.80-12,187.08-3,509.04

Finding the Fourth Proportional to 8,122.80, 12,187.08 and 3,509.04

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Solution

The fourth proportional to 8,122.80, 12,187.08 and 3,509.04 is: 5,264.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.80 : 12,187.08 = 3,509.04 : x
  2. Step 2: Convert to fraction form
    8,122.80/12,187.08 = 3,509.04/x
  3. Step 3: Cross multiply
    8,122.80x = 12,187.08 × 3,509.04
  4. Step 4: Simplify right side
    8,122.80x = 42,764,951.20
  5. Step 5: Solve for x
    x = 42,764,951.20/8,122.80
  6. Step 6: Final answer
    x = 5,264.80

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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.