Home / 1,191.10-1,786.68-325.42

Finding the Fourth Proportional to 1,191.10, 1,786.68 and 325.42

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Solution

The fourth proportional to 1,191.10, 1,786.68 and 325.42 is: 488.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.10 : 1,786.68 = 325.42 : x
  2. Step 2: Convert to fraction form
    1,191.10/1,786.68 = 325.42/x
  3. Step 3: Cross multiply
    1,191.10x = 1,786.68 × 325.42
  4. Step 4: Simplify right side
    1,191.10x = 581,421.41
  5. Step 5: Solve for x
    x = 581,421.41/1,191.10
  6. Step 6: Final answer
    x = 488.14

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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.