Home / 3,010.08-4,515.20-818.80

Finding the Fourth Proportional to 3,010.08, 4,515.20 and 818.80

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Solution

The fourth proportional to 3,010.08, 4,515.20 and 818.80 is: 1,228.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,010.08 : 4,515.20 = 818.80 : x
  2. Step 2: Convert to fraction form
    3,010.08/4,515.20 = 818.80/x
  3. Step 3: Cross multiply
    3,010.08x = 4,515.20 × 818.80
  4. Step 4: Simplify right side
    3,010.08x = 3,697,045.76
  5. Step 5: Solve for x
    x = 3,697,045.76/3,010.08
  6. Step 6: Final answer
    x = 1,228.22

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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.