Home / 3,515.10-4,857.78-2,884.68

Finding the Fourth Proportional to 3,515.10, 4,857.78 and 2,884.68

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Solution

The fourth proportional to 3,515.10, 4,857.78 and 2,884.68 is: 3,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.10 : 4,857.78 = 2,884.68 : x
  2. Step 2: Convert to fraction form
    3,515.10/4,857.78 = 2,884.68/x
  3. Step 3: Cross multiply
    3,515.10x = 4,857.78 × 2,884.68
  4. Step 4: Simplify right side
    3,515.10x = 14,013,140.81
  5. Step 5: Solve for x
    x = 14,013,140.81/3,515.10
  6. Step 6: Final answer
    x = 3,986.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.