Home / 4,231.72-6,347.42-1,111.70

Finding the Fourth Proportional to 4,231.72, 6,347.42 and 1,111.70

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Solution

The fourth proportional to 4,231.72, 6,347.42 and 1,111.70 is: 1,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,231.72 : 6,347.42 = 1,111.70 : x
  2. Step 2: Convert to fraction form
    4,231.72/6,347.42 = 1,111.70/x
  3. Step 3: Cross multiply
    4,231.72x = 6,347.42 × 1,111.70
  4. Step 4: Simplify right side
    4,231.72x = 7,056,389.52
  5. Step 5: Solve for x
    x = 7,056,389.52/4,231.72
  6. Step 6: Final answer
    x = 1,667.50

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Half scale
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Double scale
Find fourth proportional to 4,232.72, 6,348.91 and 1,112.70
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.