Home / 2,455.40-3,683.98-1,222.70

Finding the Fourth Proportional to 2,455.40, 3,683.98 and 1,222.70

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Solution

The fourth proportional to 2,455.40, 3,683.98 and 1,222.70 is: 1,834.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.40 : 3,683.98 = 1,222.70 : x
  2. Step 2: Convert to fraction form
    2,455.40/3,683.98 = 1,222.70/x
  3. Step 3: Cross multiply
    2,455.40x = 3,683.98 × 1,222.70
  4. Step 4: Simplify right side
    2,455.40x = 4,504,402.35
  5. Step 5: Solve for x
    x = 4,504,402.35/2,455.40
  6. Step 6: Final answer
    x = 1,834.49

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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.