Home / 1,207.44-1,811.36-1,085.00

Finding the Fourth Proportional to 1,207.44, 1,811.36 and 1,085.00

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Solution

The fourth proportional to 1,207.44, 1,811.36 and 1,085.00 is: 1,627.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.44 : 1,811.36 = 1,085.00 : x
  2. Step 2: Convert to fraction form
    1,207.44/1,811.36 = 1,085.00/x
  3. Step 3: Cross multiply
    1,207.44x = 1,811.36 × 1,085.00
  4. Step 4: Simplify right side
    1,207.44x = 1,965,319.26
  5. Step 5: Solve for x
    x = 1,965,319.26/1,207.44
  6. Step 6: Final answer
    x = 1,627.67

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.