Home / 3,071.24-4,232.16-2,138.12

Finding the Fourth Proportional to 3,071.24, 4,232.16 and 2,138.12

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Solution

The fourth proportional to 3,071.24, 4,232.16 and 2,138.12 is: 2,946.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.24 : 4,232.16 = 2,138.12 : x
  2. Step 2: Convert to fraction form
    3,071.24/4,232.16 = 2,138.12/x
  3. Step 3: Cross multiply
    3,071.24x = 4,232.16 × 2,138.12
  4. Step 4: Simplify right side
    3,071.24x = 9,048,865.94
  5. Step 5: Solve for x
    x = 9,048,865.94/3,071.24
  6. Step 6: Final answer
    x = 2,946.32

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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.