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Finding the Fourth Proportional to 3,149.56, 4,724.34 and 841

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Solution

The fourth proportional to 3,149.56, 4,724.34 and 841 is: 1,261.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.56 : 4,724.34 = 841 : x
  2. Step 2: Convert to fraction form
    3,149.56/4,724.34 = 841/x
  3. Step 3: Cross multiply
    3,149.56x = 4,724.34 × 841
  4. Step 4: Simplify right side
    3,149.56x = 3,973,169.94
  5. Step 5: Solve for x
    x = 3,973,169.94/3,149.56
  6. Step 6: Final answer
    x = 1,261.50

Related Problems

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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.