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Finding the Fourth Proportional to 6,378.65, 8,803.62 and 4,109.35

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Solution

The fourth proportional to 6,378.65, 8,803.62 and 4,109.35 is: 5,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.65 : 8,803.62 = 4,109.35 : x
  2. Step 2: Convert to fraction form
    6,378.65/8,803.62 = 4,109.35/x
  3. Step 3: Cross multiply
    6,378.65x = 8,803.62 × 4,109.35
  4. Step 4: Simplify right side
    6,378.65x = 36,177,155.85
  5. Step 5: Solve for x
    x = 36,177,155.85/6,378.65
  6. Step 6: Final answer
    x = 5,671.60

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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.