Home / 5,412.74-8,119.10-1,905.34

Finding the Fourth Proportional to 5,412.74, 8,119.10 and 1,905.34

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Solution

The fourth proportional to 5,412.74, 8,119.10 and 1,905.34 is: 2,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.74 : 8,119.10 = 1,905.34 : x
  2. Step 2: Convert to fraction form
    5,412.74/8,119.10 = 1,905.34/x
  3. Step 3: Cross multiply
    5,412.74x = 8,119.10 × 1,905.34
  4. Step 4: Simplify right side
    5,412.74x = 15,469,630.46
  5. Step 5: Solve for x
    x = 15,469,630.46/5,412.74
  6. Step 6: Final answer
    x = 2,858.01

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Half scale
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Double scale
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Similar ratio
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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.