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Finding the Fourth Proportional to 6,470.22, 8,926.83 and 3,987.66

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Solution

The fourth proportional to 6,470.22, 8,926.83 and 3,987.66 is: 5,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,470.22 : 8,926.83 = 3,987.66 : x
  2. Step 2: Convert to fraction form
    6,470.22/8,926.83 = 3,987.66/x
  3. Step 3: Cross multiply
    6,470.22x = 8,926.83 × 3,987.66
  4. Step 4: Simplify right side
    6,470.22x = 35,597,162.92
  5. Step 5: Solve for x
    x = 35,597,162.92/6,470.22
  6. Step 6: Final answer
    x = 5,501.69

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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.