Home / 2,232.76-3,081.64-1,289.12

Finding the Fourth Proportional to 2,232.76, 3,081.64 and 1,289.12

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Solution

The fourth proportional to 2,232.76, 3,081.64 and 1,289.12 is: 1,779.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,232.76 : 3,081.64 = 1,289.12 : x
  2. Step 2: Convert to fraction form
    2,232.76/3,081.64 = 1,289.12/x
  3. Step 3: Cross multiply
    2,232.76x = 3,081.64 × 1,289.12
  4. Step 4: Simplify right side
    2,232.76x = 3,972,603.76
  5. Step 5: Solve for x
    x = 3,972,603.76/2,232.76
  6. Step 6: Final answer
    x = 1,779.23

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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.