Home / 3,702.68-5,109.98-2,131.28

Finding the Fourth Proportional to 3,702.68, 5,109.98 and 2,131.28

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Solution

The fourth proportional to 3,702.68, 5,109.98 and 2,131.28 is: 2,941.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.68 : 5,109.98 = 2,131.28 : x
  2. Step 2: Convert to fraction form
    3,702.68/5,109.98 = 2,131.28/x
  3. Step 3: Cross multiply
    3,702.68x = 5,109.98 × 2,131.28
  4. Step 4: Simplify right side
    3,702.68x = 10,890,798.17
  5. Step 5: Solve for x
    x = 10,890,798.17/3,702.68
  6. Step 6: Final answer
    x = 2,941.33

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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.