Home / 3,809.13-5,256.39-2,130.63

Finding the Fourth Proportional to 3,809.13, 5,256.39 and 2,130.63

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Solution

The fourth proportional to 3,809.13, 5,256.39 and 2,130.63 is: 2,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.13 : 5,256.39 = 2,130.63 : x
  2. Step 2: Convert to fraction form
    3,809.13/5,256.39 = 2,130.63/x
  3. Step 3: Cross multiply
    3,809.13x = 5,256.39 × 2,130.63
  4. Step 4: Simplify right side
    3,809.13x = 11,199,422.23
  5. Step 5: Solve for x
    x = 11,199,422.23/3,809.13
  6. Step 6: Final answer
    x = 2,940.15

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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.