Home / 1,158.45-1,738.16-611.12

Finding the Fourth Proportional to 1,158.45, 1,738.16 and 611.12

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Solution

The fourth proportional to 1,158.45, 1,738.16 and 611.12 is: 916.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.45 : 1,738.16 = 611.12 : x
  2. Step 2: Convert to fraction form
    1,158.45/1,738.16 = 611.12/x
  3. Step 3: Cross multiply
    1,158.45x = 1,738.16 × 611.12
  4. Step 4: Simplify right side
    1,158.45x = 1,062,212.59
  5. Step 5: Solve for x
    x = 1,062,212.59/1,158.45
  6. Step 6: Final answer
    x = 916.93

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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.