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Finding the Fourth Proportional to 6,378.42, 8,808.03 and 4,803.78

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Solution

The fourth proportional to 6,378.42, 8,808.03 and 4,803.78 is: 6,633.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,378.42 : 8,808.03 = 4,803.78 : x
  2. Step 2: Convert to fraction form
    6,378.42/8,808.03 = 4,803.78/x
  3. Step 3: Cross multiply
    6,378.42x = 8,808.03 × 4,803.78
  4. Step 4: Simplify right side
    6,378.42x = 42,311,838.35
  5. Step 5: Solve for x
    x = 42,311,838.35/6,378.42
  6. Step 6: Final answer
    x = 6,633.59

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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.