Home / 4,930.13-7,390.53-1,640.85

Finding the Fourth Proportional to 4,930.13, 7,390.53 and 1,640.85

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Solution

The fourth proportional to 4,930.13, 7,390.53 and 1,640.85 is: 2,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,930.13 : 7,390.53 = 1,640.85 : x
  2. Step 2: Convert to fraction form
    4,930.13/7,390.53 = 1,640.85/x
  3. Step 3: Cross multiply
    4,930.13x = 7,390.53 × 1,640.85
  4. Step 4: Simplify right side
    4,930.13x = 12,126,751.15
  5. Step 5: Solve for x
    x = 12,126,751.15/4,930.13
  6. Step 6: Final answer
    x = 2,459.72

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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.