Home / 4,905.65-7,353.75-3,145.72

Finding the Fourth Proportional to 4,905.65, 7,353.75 and 3,145.72

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Solution

The fourth proportional to 4,905.65, 7,353.75 and 3,145.72 is: 4,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.65 : 7,353.75 = 3,145.72 : x
  2. Step 2: Convert to fraction form
    4,905.65/7,353.75 = 3,145.72/x
  3. Step 3: Cross multiply
    4,905.65x = 7,353.75 × 3,145.72
  4. Step 4: Simplify right side
    4,905.65x = 23,132,801.68
  5. Step 5: Solve for x
    x = 23,132,801.68/4,905.65
  6. Step 6: Final answer
    x = 4,715.55

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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.