Home / 3,865.12-5,333.80-2,187.08

Finding the Fourth Proportional to 3,865.12, 5,333.80 and 2,187.08

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Solution

The fourth proportional to 3,865.12, 5,333.80 and 2,187.08 is: 3,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.12 : 5,333.80 = 2,187.08 : x
  2. Step 2: Convert to fraction form
    3,865.12/5,333.80 = 2,187.08/x
  3. Step 3: Cross multiply
    3,865.12x = 5,333.80 × 2,187.08
  4. Step 4: Simplify right side
    3,865.12x = 11,665,447.30
  5. Step 5: Solve for x
    x = 11,665,447.30/3,865.12
  6. Step 6: Final answer
    x = 3,018.13

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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.