Home / 4,905.87-7,354.66-2,130.45

Finding the Fourth Proportional to 4,905.87, 7,354.66 and 2,130.45

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Solution

The fourth proportional to 4,905.87, 7,354.66 and 2,130.45 is: 3,193.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.87 : 7,354.66 = 2,130.45 : x
  2. Step 2: Convert to fraction form
    4,905.87/7,354.66 = 2,130.45/x
  3. Step 3: Cross multiply
    4,905.87x = 7,354.66 × 2,130.45
  4. Step 4: Simplify right side
    4,905.87x = 15,668,687.97
  5. Step 5: Solve for x
    x = 15,668,687.97/4,905.87
  6. Step 6: Final answer
    x = 3,193.87

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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.