Home / 2,158.07-3,236.29-677.12

Finding the Fourth Proportional to 2,158.07, 3,236.29 and 677.12

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Solution

The fourth proportional to 2,158.07, 3,236.29 and 677.12 is: 1,015.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.07 : 3,236.29 = 677.12 : x
  2. Step 2: Convert to fraction form
    2,158.07/3,236.29 = 677.12/x
  3. Step 3: Cross multiply
    2,158.07x = 3,236.29 × 677.12
  4. Step 4: Simplify right side
    2,158.07x = 2,191,338.81
  5. Step 5: Solve for x
    x = 2,191,338.81/2,158.07
  6. Step 6: Final answer
    x = 1,015.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.