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Finding the Fourth Proportional to 2,713.88, 4,090.88 and 2,555.32

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Solution

The fourth proportional to 2,713.88, 4,090.88 and 2,555.32 is: 3,851.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,713.88 : 4,090.88 = 2,555.32 : x
  2. Step 2: Convert to fraction form
    2,713.88/4,090.88 = 2,555.32/x
  3. Step 3: Cross multiply
    2,713.88x = 4,090.88 × 2,555.32
  4. Step 4: Simplify right side
    2,713.88x = 10,453,507.48
  5. Step 5: Solve for x
    x = 10,453,507.48/2,713.88
  6. Step 6: Final answer
    x = 3,851.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.