Home / 2,191.13-3,289.16-1,355.64

Finding the Fourth Proportional to 2,191.13, 3,289.16 and 1,355.64

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Solution

The fourth proportional to 2,191.13, 3,289.16 and 1,355.64 is: 2,034.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.13 : 3,289.16 = 1,355.64 : x
  2. Step 2: Convert to fraction form
    2,191.13/3,289.16 = 1,355.64/x
  3. Step 3: Cross multiply
    2,191.13x = 3,289.16 × 1,355.64
  4. Step 4: Simplify right side
    2,191.13x = 4,458,900.29
  5. Step 5: Solve for x
    x = 4,458,900.29/2,191.13
  6. Step 6: Final answer
    x = 2,034.98

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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.