Home / 4,131.85-5,702.57-2,640.76

Finding the Fourth Proportional to 4,131.85, 5,702.57 and 2,640.76

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Solution

The fourth proportional to 4,131.85, 5,702.57 and 2,640.76 is: 3,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,131.85 : 5,702.57 = 2,640.76 : x
  2. Step 2: Convert to fraction form
    4,131.85/5,702.57 = 2,640.76/x
  3. Step 3: Cross multiply
    4,131.85x = 5,702.57 × 2,640.76
  4. Step 4: Simplify right side
    4,131.85x = 15,059,111.10
  5. Step 5: Solve for x
    x = 15,059,111.10/4,131.85
  6. Step 6: Final answer
    x = 3,644.64

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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.