Home / 1,158.82-1,738.23-389.32

Finding the Fourth Proportional to 1,158.82, 1,738.23 and 389.32

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Solution

The fourth proportional to 1,158.82, 1,738.23 and 389.32 is: 583.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.82 : 1,738.23 = 389.32 : x
  2. Step 2: Convert to fraction form
    1,158.82/1,738.23 = 389.32/x
  3. Step 3: Cross multiply
    1,158.82x = 1,738.23 × 389.32
  4. Step 4: Simplify right side
    1,158.82x = 676,727.70
  5. Step 5: Solve for x
    x = 676,727.70/1,158.82
  6. Step 6: Final answer
    x = 583.98

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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.