Home / 3,421.22-5,131.83-1,112.72

Finding the Fourth Proportional to 3,421.22, 5,131.83 and 1,112.72

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Solution

The fourth proportional to 3,421.22, 5,131.83 and 1,112.72 is: 1,669.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.22 : 5,131.83 = 1,112.72 : x
  2. Step 2: Convert to fraction form
    3,421.22/5,131.83 = 1,112.72/x
  3. Step 3: Cross multiply
    3,421.22x = 5,131.83 × 1,112.72
  4. Step 4: Simplify right side
    3,421.22x = 5,710,264.22
  5. Step 5: Solve for x
    x = 5,710,264.22/3,421.22
  6. Step 6: Final answer
    x = 1,669.07

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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.