Home / 4,128.51-6,193.89-1,206.79

Finding the Fourth Proportional to 4,128.51, 6,193.89 and 1,206.79

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Solution

The fourth proportional to 4,128.51, 6,193.89 and 1,206.79 is: 1,810.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.51 : 6,193.89 = 1,206.79 : x
  2. Step 2: Convert to fraction form
    4,128.51/6,193.89 = 1,206.79/x
  3. Step 3: Cross multiply
    4,128.51x = 6,193.89 × 1,206.79
  4. Step 4: Simplify right side
    4,128.51x = 7,474,724.51
  5. Step 5: Solve for x
    x = 7,474,724.51/4,128.51
  6. Step 6: Final answer
    x = 1,810.51

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Half scale
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Double scale
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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.