Home / 8,123.24-12,179.40-2,928.44

Finding the Fourth Proportional to 8,123.24, 12,179.40 and 2,928.44

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Solution

The fourth proportional to 8,123.24, 12,179.40 and 2,928.44 is: 4,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.24 : 12,179.40 = 2,928.44 : x
  2. Step 2: Convert to fraction form
    8,123.24/12,179.40 = 2,928.44/x
  3. Step 3: Cross multiply
    8,123.24x = 12,179.40 × 2,928.44
  4. Step 4: Simplify right side
    8,123.24x = 35,666,642.14
  5. Step 5: Solve for x
    x = 35,666,642.14/8,123.24
  6. Step 6: Final answer
    x = 4,390.69

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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.