Home / 2,162.25-2,984.31-1,230.75

Finding the Fourth Proportional to 2,162.25, 2,984.31 and 1,230.75

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Solution

The fourth proportional to 2,162.25, 2,984.31 and 1,230.75 is: 1,698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.25 : 2,984.31 = 1,230.75 : x
  2. Step 2: Convert to fraction form
    2,162.25/2,984.31 = 1,230.75/x
  3. Step 3: Cross multiply
    2,162.25x = 2,984.31 × 1,230.75
  4. Step 4: Simplify right side
    2,162.25x = 3,672,939.53
  5. Step 5: Solve for x
    x = 3,672,939.53/2,162.25
  6. Step 6: Final answer
    x = 1,698.67

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.