Home / 7,801.45-10,768.20-4,615.85

Finding the Fourth Proportional to 7,801.45, 10,768.20 and 4,615.85

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Solution

The fourth proportional to 7,801.45, 10,768.20 and 4,615.85 is: 6,371.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.45 : 10,768.20 = 4,615.85 : x
  2. Step 2: Convert to fraction form
    7,801.45/10,768.20 = 4,615.85/x
  3. Step 3: Cross multiply
    7,801.45x = 10,768.20 × 4,615.85
  4. Step 4: Simplify right side
    7,801.45x = 49,704,395.97
  5. Step 5: Solve for x
    x = 49,704,395.97/7,801.45
  6. Step 6: Final answer
    x = 6,371.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.