Home / 7,127.08-9,838.12-6,379.72

Finding the Fourth Proportional to 7,127.08, 9,838.12 and 6,379.72

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Solution

The fourth proportional to 7,127.08, 9,838.12 and 6,379.72 is: 8,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.08 : 9,838.12 = 6,379.72 : x
  2. Step 2: Convert to fraction form
    7,127.08/9,838.12 = 6,379.72/x
  3. Step 3: Cross multiply
    7,127.08x = 9,838.12 × 6,379.72
  4. Step 4: Simplify right side
    7,127.08x = 62,764,450.93
  5. Step 5: Solve for x
    x = 62,764,450.93/7,127.08
  6. Step 6: Final answer
    x = 8,806.47

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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.