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Finding the Fourth Proportional to 6,651.76, 9,177.78 and 4,291.06

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Solution

The fourth proportional to 6,651.76, 9,177.78 and 4,291.06 is: 5,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.76 : 9,177.78 = 4,291.06 : x
  2. Step 2: Convert to fraction form
    6,651.76/9,177.78 = 4,291.06/x
  3. Step 3: Cross multiply
    6,651.76x = 9,177.78 × 4,291.06
  4. Step 4: Simplify right side
    6,651.76x = 39,382,404.65
  5. Step 5: Solve for x
    x = 39,382,404.65/6,651.76
  6. Step 6: Final answer
    x = 5,920.60

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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.