Home / 7,869.10-11,803.68-2,938.69

Finding the Fourth Proportional to 7,869.10, 11,803.68 and 2,938.69

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Solution

The fourth proportional to 7,869.10, 11,803.68 and 2,938.69 is: 4,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.10 : 11,803.68 = 2,938.69 : x
  2. Step 2: Convert to fraction form
    7,869.10/11,803.68 = 2,938.69/x
  3. Step 3: Cross multiply
    7,869.10x = 11,803.68 × 2,938.69
  4. Step 4: Simplify right side
    7,869.10x = 34,687,356.38
  5. Step 5: Solve for x
    x = 34,687,356.38/7,869.10
  6. Step 6: Final answer
    x = 4,408.05

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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.