Home / 7,821.78-10,791.36-4,462.17

Finding the Fourth Proportional to 7,821.78, 10,791.36 and 4,462.17

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Solution

The fourth proportional to 7,821.78, 10,791.36 and 4,462.17 is: 6,156.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.78 : 10,791.36 = 4,462.17 : x
  2. Step 2: Convert to fraction form
    7,821.78/10,791.36 = 4,462.17/x
  3. Step 3: Cross multiply
    7,821.78x = 10,791.36 × 4,462.17
  4. Step 4: Simplify right side
    7,821.78x = 48,152,882.85
  5. Step 5: Solve for x
    x = 48,152,882.85/7,821.78
  6. Step 6: Final answer
    x = 6,156.26

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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.