Home / 7,938.60-11,904.85-3,775.40

Finding the Fourth Proportional to 7,938.60, 11,904.85 and 3,775.40

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Solution

The fourth proportional to 7,938.60, 11,904.85 and 3,775.40 is: 5,661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.60 : 11,904.85 = 3,775.40 : x
  2. Step 2: Convert to fraction form
    7,938.60/11,904.85 = 3,775.40/x
  3. Step 3: Cross multiply
    7,938.60x = 11,904.85 × 3,775.40
  4. Step 4: Simplify right side
    7,938.60x = 44,945,570.69
  5. Step 5: Solve for x
    x = 44,945,570.69/7,938.60
  6. Step 6: Final answer
    x = 5,661.65

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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.