Home / 3,702.96-5,109.57-2,130.75

Finding the Fourth Proportional to 3,702.96, 5,109.57 and 2,130.75

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Solution

The fourth proportional to 3,702.96, 5,109.57 and 2,130.75 is: 2,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.96 : 5,109.57 = 2,130.75 : x
  2. Step 2: Convert to fraction form
    3,702.96/5,109.57 = 2,130.75/x
  3. Step 3: Cross multiply
    3,702.96x = 5,109.57 × 2,130.75
  4. Step 4: Simplify right side
    3,702.96x = 10,887,216.28
  5. Step 5: Solve for x
    x = 10,887,216.28/3,702.96
  6. Step 6: Final answer
    x = 2,940.14

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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.