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Finding the Fourth Proportional to 6,370.96, 8,778.96 and 4,878.88

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Solution

The fourth proportional to 6,370.96, 8,778.96 and 4,878.88 is: 6,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,370.96 : 8,778.96 = 4,878.88 : x
  2. Step 2: Convert to fraction form
    6,370.96/8,778.96 = 4,878.88/x
  3. Step 3: Cross multiply
    6,370.96x = 8,778.96 × 4,878.88
  4. Step 4: Simplify right side
    6,370.96x = 42,831,492.36
  5. Step 5: Solve for x
    x = 42,831,492.36/6,370.96
  6. Step 6: Final answer
    x = 6,722.93

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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.