Home / 1,161.46-1,741.30-380.99

Finding the Fourth Proportional to 1,161.46, 1,741.30 and 380.99

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Solution

The fourth proportional to 1,161.46, 1,741.30 and 380.99 is: 571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.46 : 1,741.30 = 380.99 : x
  2. Step 2: Convert to fraction form
    1,161.46/1,741.30 = 380.99/x
  3. Step 3: Cross multiply
    1,161.46x = 1,741.30 × 380.99
  4. Step 4: Simplify right side
    1,161.46x = 663,415.98
  5. Step 5: Solve for x
    x = 663,415.98/1,161.46
  6. Step 6: Final answer
    x = 571.19

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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.