Home / 3,010.11-4,515.51-818.87

Finding the Fourth Proportional to 3,010.11, 4,515.51 and 818.87

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Solution

The fourth proportional to 3,010.11, 4,515.51 and 818.87 is: 1,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,010.11 : 4,515.51 = 818.87 : x
  2. Step 2: Convert to fraction form
    3,010.11/4,515.51 = 818.87/x
  3. Step 3: Cross multiply
    3,010.11x = 4,515.51 × 818.87
  4. Step 4: Simplify right side
    3,010.11x = 3,697,593.10
  5. Step 5: Solve for x
    x = 3,697,593.10/3,010.11
  6. Step 6: Final answer
    x = 1,228.39

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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.