Home / 6,622.45-9,139.85-4,271.42

Finding the Fourth Proportional to 6,622.45, 9,139.85 and 4,271.42

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Solution

The fourth proportional to 6,622.45, 9,139.85 and 4,271.42 is: 5,895.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.45 : 9,139.85 = 4,271.42 : x
  2. Step 2: Convert to fraction form
    6,622.45/9,139.85 = 4,271.42/x
  3. Step 3: Cross multiply
    6,622.45x = 9,139.85 × 4,271.42
  4. Step 4: Simplify right side
    6,622.45x = 39,040,171.62
  5. Step 5: Solve for x
    x = 39,040,171.62/6,622.45
  6. Step 6: Final answer
    x = 5,895.13

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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.