Home / 2,308.98-3,186.30-1,261.08

Finding the Fourth Proportional to 2,308.98, 3,186.30 and 1,261.08

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Solution

The fourth proportional to 2,308.98, 3,186.30 and 1,261.08 is: 1,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.98 : 3,186.30 = 1,261.08 : x
  2. Step 2: Convert to fraction form
    2,308.98/3,186.30 = 1,261.08/x
  3. Step 3: Cross multiply
    2,308.98x = 3,186.30 × 1,261.08
  4. Step 4: Simplify right side
    2,308.98x = 4,018,179.20
  5. Step 5: Solve for x
    x = 4,018,179.20/2,308.98
  6. Step 6: Final answer
    x = 1,740.24

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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.