Home / 3,987.16-5,502.46-2,308.66

Finding the Fourth Proportional to 3,987.16, 5,502.46 and 2,308.66

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Solution

The fourth proportional to 3,987.16, 5,502.46 and 2,308.66 is: 3,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.16 : 5,502.46 = 2,308.66 : x
  2. Step 2: Convert to fraction form
    3,987.16/5,502.46 = 2,308.66/x
  3. Step 3: Cross multiply
    3,987.16x = 5,502.46 × 2,308.66
  4. Step 4: Simplify right side
    3,987.16x = 12,703,309.30
  5. Step 5: Solve for x
    x = 12,703,309.30/3,987.16
  6. Step 6: Final answer
    x = 3,186.05

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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.