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Finding the Fourth Proportional to 4,679.92, 6,438.92 and 3,554.32

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Solution

The fourth proportional to 4,679.92, 6,438.92 and 3,554.32 is: 4,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.92 : 6,438.92 = 3,554.32 : x
  2. Step 2: Convert to fraction form
    4,679.92/6,438.92 = 3,554.32/x
  3. Step 3: Cross multiply
    4,679.92x = 6,438.92 × 3,554.32
  4. Step 4: Simplify right side
    4,679.92x = 22,885,982.13
  5. Step 5: Solve for x
    x = 22,885,982.13/4,679.92
  6. Step 6: Final answer
    x = 4,890.25

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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.