Home / 9,328.68-12,872.36-5,745.51

Finding the Fourth Proportional to 9,328.68, 12,872.36 and 5,745.51

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Solution

The fourth proportional to 9,328.68, 12,872.36 and 5,745.51 is: 7,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.68 : 12,872.36 = 5,745.51 : x
  2. Step 2: Convert to fraction form
    9,328.68/12,872.36 = 5,745.51/x
  3. Step 3: Cross multiply
    9,328.68x = 12,872.36 × 5,745.51
  4. Step 4: Simplify right side
    9,328.68x = 73,958,244.38
  5. Step 5: Solve for x
    x = 73,958,244.38/9,328.68
  6. Step 6: Final answer
    x = 7,928.05

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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.