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Finding the Fourth Proportional to 1,157.67, 1,737.47 and 1,084.69

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Solution

The fourth proportional to 1,157.67, 1,737.47 and 1,084.69 is: 1,627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.67 : 1,737.47 = 1,084.69 : x
  2. Step 2: Convert to fraction form
    1,157.67/1,737.47 = 1,084.69/x
  3. Step 3: Cross multiply
    1,157.67x = 1,737.47 × 1,084.69
  4. Step 4: Simplify right side
    1,157.67x = 1,884,610.36
  5. Step 5: Solve for x
    x = 1,884,610.36/1,157.67
  6. Step 6: Final answer
    x = 1,627.94

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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.