Home / 1,157.07-1,725.85-1,122.49

Finding the Fourth Proportional to 1,157.07, 1,725.85 and 1,122.49

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Solution

The fourth proportional to 1,157.07, 1,725.85 and 1,122.49 is: 1,674.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.07 : 1,725.85 = 1,122.49 : x
  2. Step 2: Convert to fraction form
    1,157.07/1,725.85 = 1,122.49/x
  3. Step 3: Cross multiply
    1,157.07x = 1,725.85 × 1,122.49
  4. Step 4: Simplify right side
    1,157.07x = 1,937,249.37
  5. Step 5: Solve for x
    x = 1,937,249.37/1,157.07
  6. Step 6: Final answer
    x = 1,674.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.