Home / 3,487.89-5,230.71-1,147.35

Finding the Fourth Proportional to 3,487.89, 5,230.71 and 1,147.35

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Solution

The fourth proportional to 3,487.89, 5,230.71 and 1,147.35 is: 1,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.89 : 5,230.71 = 1,147.35 : x
  2. Step 2: Convert to fraction form
    3,487.89/5,230.71 = 1,147.35/x
  3. Step 3: Cross multiply
    3,487.89x = 5,230.71 × 1,147.35
  4. Step 4: Simplify right side
    3,487.89x = 6,001,455.12
  5. Step 5: Solve for x
    x = 6,001,455.12/3,487.89
  6. Step 6: Final answer
    x = 1,720.65

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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.