Home / 7,938.47-11,907.95-3,778.92

Finding the Fourth Proportional to 7,938.47, 11,907.95 and 3,778.92

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Solution

The fourth proportional to 7,938.47, 11,907.95 and 3,778.92 is: 5,668.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.47 : 11,907.95 = 3,778.92 : x
  2. Step 2: Convert to fraction form
    7,938.47/11,907.95 = 3,778.92/x
  3. Step 3: Cross multiply
    7,938.47x = 11,907.95 × 3,778.92
  4. Step 4: Simplify right side
    7,938.47x = 44,999,171.52
  5. Step 5: Solve for x
    x = 44,999,171.52/7,938.47
  6. Step 6: Final answer
    x = 5,668.49

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1.5x scale

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.