Home / 1,157.10-1,736.28-426.57

Finding the Fourth Proportional to 1,157.10, 1,736.28 and 426.57

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Solution

The fourth proportional to 1,157.10, 1,736.28 and 426.57 is: 640.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.10 : 1,736.28 = 426.57 : x
  2. Step 2: Convert to fraction form
    1,157.10/1,736.28 = 426.57/x
  3. Step 3: Cross multiply
    1,157.10x = 1,736.28 × 426.57
  4. Step 4: Simplify right side
    1,157.10x = 740,644.96
  5. Step 5: Solve for x
    x = 740,644.96/1,157.10
  6. Step 6: Final answer
    x = 640.09

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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.