Home / 3,513.25-5,269.97-916.21

Finding the Fourth Proportional to 3,513.25, 5,269.97 and 916.21

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Solution

The fourth proportional to 3,513.25, 5,269.97 and 916.21 is: 1,374.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,513.25 : 5,269.97 = 916.21 : x
  2. Step 2: Convert to fraction form
    3,513.25/5,269.97 = 916.21/x
  3. Step 3: Cross multiply
    3,513.25x = 5,269.97 × 916.21
  4. Step 4: Simplify right side
    3,513.25x = 4,828,399.21
  5. Step 5: Solve for x
    x = 4,828,399.21/3,513.25
  6. Step 6: Final answer
    x = 1,374.34

Related Problems

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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.