Home / 3,518.70-5,278.04-1,668.80

Finding the Fourth Proportional to 3,518.70, 5,278.04 and 1,668.80

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Solution

The fourth proportional to 3,518.70, 5,278.04 and 1,668.80 is: 2,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.70 : 5,278.04 = 1,668.80 : x
  2. Step 2: Convert to fraction form
    3,518.70/5,278.04 = 1,668.80/x
  3. Step 3: Cross multiply
    3,518.70x = 5,278.04 × 1,668.80
  4. Step 4: Simplify right side
    3,518.70x = 8,808,006.35
  5. Step 5: Solve for x
    x = 8,808,006.35/3,518.70
  6. Step 6: Final answer
    x = 2,503.20

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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.