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Finding the Fourth Proportional to 6,287.74, 8,657.22 and 4,790.86

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Solution

The fourth proportional to 6,287.74, 8,657.22 and 4,790.86 is: 6,596.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287.74 : 8,657.22 = 4,790.86 : x
  2. Step 2: Convert to fraction form
    6,287.74/8,657.22 = 4,790.86/x
  3. Step 3: Cross multiply
    6,287.74x = 8,657.22 × 4,790.86
  4. Step 4: Simplify right side
    6,287.74x = 41,475,529.01
  5. Step 5: Solve for x
    x = 41,475,529.01/6,287.74
  6. Step 6: Final answer
    x = 6,596.25

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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.