Home / 7,140.78-9,849.33-4,898.70

Finding the Fourth Proportional to 7,140.78, 9,849.33 and 4,898.70

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Solution

The fourth proportional to 7,140.78, 9,849.33 and 4,898.70 is: 6,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.78 : 9,849.33 = 4,898.70 : x
  2. Step 2: Convert to fraction form
    7,140.78/9,849.33 = 4,898.70/x
  3. Step 3: Cross multiply
    7,140.78x = 9,849.33 × 4,898.70
  4. Step 4: Simplify right side
    7,140.78x = 48,248,912.87
  5. Step 5: Solve for x
    x = 48,248,912.87/7,140.78
  6. Step 6: Final answer
    x = 6,756.81

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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.