Home / 3,187.80-4,402.48-2,195.64

Finding the Fourth Proportional to 3,187.80, 4,402.48 and 2,195.64

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Solution

The fourth proportional to 3,187.80, 4,402.48 and 2,195.64 is: 3,032.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.80 : 4,402.48 = 2,195.64 : x
  2. Step 2: Convert to fraction form
    3,187.80/4,402.48 = 2,195.64/x
  3. Step 3: Cross multiply
    3,187.80x = 4,402.48 × 2,195.64
  4. Step 4: Simplify right side
    3,187.80x = 9,666,261.19
  5. Step 5: Solve for x
    x = 9,666,261.19/3,187.80
  6. Step 6: Final answer
    x = 3,032.27

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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.