Home / 8,513.20-11,745.92-4,977.28

Finding the Fourth Proportional to 8,513.20, 11,745.92 and 4,977.28

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Solution

The fourth proportional to 8,513.20, 11,745.92 and 4,977.28 is: 6,867.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.20 : 11,745.92 = 4,977.28 : x
  2. Step 2: Convert to fraction form
    8,513.20/11,745.92 = 4,977.28/x
  3. Step 3: Cross multiply
    8,513.20x = 11,745.92 × 4,977.28
  4. Step 4: Simplify right side
    8,513.20x = 58,462,732.70
  5. Step 5: Solve for x
    x = 58,462,732.70/8,513.20
  6. Step 6: Final answer
    x = 6,867.30

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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.