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Finding the Fourth Proportional to 4,947.08, 7,408.91 and 4,294.28

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Solution

The fourth proportional to 4,947.08, 7,408.91 and 4,294.28 is: 6,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.08 : 7,408.91 = 4,294.28 : x
  2. Step 2: Convert to fraction form
    4,947.08/7,408.91 = 4,294.28/x
  3. Step 3: Cross multiply
    4,947.08x = 7,408.91 × 4,294.28
  4. Step 4: Simplify right side
    4,947.08x = 31,815,896.99
  5. Step 5: Solve for x
    x = 31,815,896.99/4,947.08
  6. Step 6: Final answer
    x = 6,431.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.