Home / 3,131.04-4,696.56-2,154.18

Finding the Fourth Proportional to 3,131.04, 4,696.56 and 2,154.18

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Solution

The fourth proportional to 3,131.04, 4,696.56 and 2,154.18 is: 3,231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.04 : 4,696.56 = 2,154.18 : x
  2. Step 2: Convert to fraction form
    3,131.04/4,696.56 = 2,154.18/x
  3. Step 3: Cross multiply
    3,131.04x = 4,696.56 × 2,154.18
  4. Step 4: Simplify right side
    3,131.04x = 10,117,235.62
  5. Step 5: Solve for x
    x = 10,117,235.62/3,131.04
  6. Step 6: Final answer
    x = 3,231.27

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Half scale
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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.