Home / 5,285.85-7,928.84-2,122.93

Finding the Fourth Proportional to 5,285.85, 7,928.84 and 2,122.93

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Solution

The fourth proportional to 5,285.85, 7,928.84 and 2,122.93 is: 3,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.85 : 7,928.84 = 2,122.93 : x
  2. Step 2: Convert to fraction form
    5,285.85/7,928.84 = 2,122.93/x
  3. Step 3: Cross multiply
    5,285.85x = 7,928.84 × 2,122.93
  4. Step 4: Simplify right side
    5,285.85x = 16,832,372.30
  5. Step 5: Solve for x
    x = 16,832,372.30/5,285.85
  6. Step 6: Final answer
    x = 3,184.42

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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.