Home / 3,409.23-4,704.36-1,916.80

Finding the Fourth Proportional to 3,409.23, 4,704.36 and 1,916.80

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Solution

The fourth proportional to 3,409.23, 4,704.36 and 1,916.80 is: 2,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.23 : 4,704.36 = 1,916.80 : x
  2. Step 2: Convert to fraction form
    3,409.23/4,704.36 = 1,916.80/x
  3. Step 3: Cross multiply
    3,409.23x = 4,704.36 × 1,916.80
  4. Step 4: Simplify right side
    3,409.23x = 9,017,317.25
  5. Step 5: Solve for x
    x = 9,017,317.25/3,409.23
  6. Step 6: Final answer
    x = 2,644.97

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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.