Home / 5,453.36-8,180.40-1,989.68

Finding the Fourth Proportional to 5,453.36, 8,180.40 and 1,989.68

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Solution

The fourth proportional to 5,453.36, 8,180.40 and 1,989.68 is: 2,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,453.36 : 8,180.40 = 1,989.68 : x
  2. Step 2: Convert to fraction form
    5,453.36/8,180.40 = 1,989.68/x
  3. Step 3: Cross multiply
    5,453.36x = 8,180.40 × 1,989.68
  4. Step 4: Simplify right side
    5,453.36x = 16,276,378.27
  5. Step 5: Solve for x
    x = 16,276,378.27/5,453.36
  6. Step 6: Final answer
    x = 2,984.65

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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.