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Finding the Fourth Proportional to 6,477.30, 8,938.35 and 3,958.92

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Solution

The fourth proportional to 6,477.30, 8,938.35 and 3,958.92 is: 5,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,477.30 : 8,938.35 = 3,958.92 : x
  2. Step 2: Convert to fraction form
    6,477.30/8,938.35 = 3,958.92/x
  3. Step 3: Cross multiply
    6,477.30x = 8,938.35 × 3,958.92
  4. Step 4: Simplify right side
    6,477.30x = 35,386,212.58
  5. Step 5: Solve for x
    x = 35,386,212.58/6,477.30
  6. Step 6: Final answer
    x = 5,463.11

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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.