Home / 4,128.19-6,192.40-1,206.50

Finding the Fourth Proportional to 4,128.19, 6,192.40 and 1,206.50

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Solution

The fourth proportional to 4,128.19, 6,192.40 and 1,206.50 is: 1,809.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.19 : 6,192.40 = 1,206.50 : x
  2. Step 2: Convert to fraction form
    4,128.19/6,192.40 = 1,206.50/x
  3. Step 3: Cross multiply
    4,128.19x = 6,192.40 × 1,206.50
  4. Step 4: Simplify right side
    4,128.19x = 7,471,098.88
  5. Step 5: Solve for x
    x = 7,471,098.88/4,128.19
  6. Step 6: Final answer
    x = 1,809.78

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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.