Home / 8,928.72-12,318.92-5,201.36

Finding the Fourth Proportional to 8,928.72, 12,318.92 and 5,201.36

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Solution

The fourth proportional to 8,928.72, 12,318.92 and 5,201.36 is: 7,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.72 : 12,318.92 = 5,201.36 : x
  2. Step 2: Convert to fraction form
    8,928.72/12,318.92 = 5,201.36/x
  3. Step 3: Cross multiply
    8,928.72x = 12,318.92 × 5,201.36
  4. Step 4: Simplify right side
    8,928.72x = 64,075,137.73
  5. Step 5: Solve for x
    x = 64,075,137.73/8,928.72
  6. Step 6: Final answer
    x = 7,176.30

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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.