Home / 3,489.04-4,813.80-2,790.16

Finding the Fourth Proportional to 3,489.04, 4,813.80 and 2,790.16

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Solution

The fourth proportional to 3,489.04, 4,813.80 and 2,790.16 is: 3,849.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.04 : 4,813.80 = 2,790.16 : x
  2. Step 2: Convert to fraction form
    3,489.04/4,813.80 = 2,790.16/x
  3. Step 3: Cross multiply
    3,489.04x = 4,813.80 × 2,790.16
  4. Step 4: Simplify right side
    3,489.04x = 13,431,272.21
  5. Step 5: Solve for x
    x = 13,431,272.21/3,489.04
  6. Step 6: Final answer
    x = 3,849.56

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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.