Home / 5,178.25-7,766.28-1,668.57

Finding the Fourth Proportional to 5,178.25, 7,766.28 and 1,668.57

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Solution

The fourth proportional to 5,178.25, 7,766.28 and 1,668.57 is: 2,502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.25 : 7,766.28 = 1,668.57 : x
  2. Step 2: Convert to fraction form
    5,178.25/7,766.28 = 1,668.57/x
  3. Step 3: Cross multiply
    5,178.25x = 7,766.28 × 1,668.57
  4. Step 4: Simplify right side
    5,178.25x = 12,958,552.70
  5. Step 5: Solve for x
    x = 12,958,552.70/5,178.25
  6. Step 6: Final answer
    x = 2,502.50

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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.