Home / 5,179.12-7,766.88-1,715.44

Finding the Fourth Proportional to 5,179.12, 7,766.88 and 1,715.44

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Solution

The fourth proportional to 5,179.12, 7,766.88 and 1,715.44 is: 2,572.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.12 : 7,766.88 = 1,715.44 : x
  2. Step 2: Convert to fraction form
    5,179.12/7,766.88 = 1,715.44/x
  3. Step 3: Cross multiply
    5,179.12x = 7,766.88 × 1,715.44
  4. Step 4: Simplify right side
    5,179.12x = 13,323,616.63
  5. Step 5: Solve for x
    x = 13,323,616.63/5,179.12
  6. Step 6: Final answer
    x = 2,572.56

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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.