Home / 5,147.05-7,102.65-2,877.99

Finding the Fourth Proportional to 5,147.05, 7,102.65 and 2,877.99

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Solution

The fourth proportional to 5,147.05, 7,102.65 and 2,877.99 is: 3,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.05 : 7,102.65 = 2,877.99 : x
  2. Step 2: Convert to fraction form
    5,147.05/7,102.65 = 2,877.99/x
  3. Step 3: Cross multiply
    5,147.05x = 7,102.65 × 2,877.99
  4. Step 4: Simplify right side
    5,147.05x = 20,441,355.67
  5. Step 5: Solve for x
    x = 20,441,355.67/5,147.05
  6. Step 6: Final answer
    x = 3,971.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.