Home / 8,745.87-12,069.37-5,160.90

Finding the Fourth Proportional to 8,745.87, 12,069.37 and 5,160.90

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Solution

The fourth proportional to 8,745.87, 12,069.37 and 5,160.90 is: 7,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.87 : 12,069.37 = 5,160.90 : x
  2. Step 2: Convert to fraction form
    8,745.87/12,069.37 = 5,160.90/x
  3. Step 3: Cross multiply
    8,745.87x = 12,069.37 × 5,160.90
  4. Step 4: Simplify right side
    8,745.87x = 62,288,811.63
  5. Step 5: Solve for x
    x = 62,288,811.63/8,745.87
  6. Step 6: Final answer
    x = 7,122.08

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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.