Home / 7,118.90-10,666.20-4,518.80

Finding the Fourth Proportional to 7,118.90, 10,666.20 and 4,518.80

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Solution

The fourth proportional to 7,118.90, 10,666.20 and 4,518.80 is: 6,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.90 : 10,666.20 = 4,518.80 : x
  2. Step 2: Convert to fraction form
    7,118.90/10,666.20 = 4,518.80/x
  3. Step 3: Cross multiply
    7,118.90x = 10,666.20 × 4,518.80
  4. Step 4: Simplify right side
    7,118.90x = 48,198,424.56
  5. Step 5: Solve for x
    x = 48,198,424.56/7,118.90
  6. Step 6: Final answer
    x = 6,770.49

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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.