Home / 3,543.43-5,315.75-1,078.49

Finding the Fourth Proportional to 3,543.43, 5,315.75 and 1,078.49

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Solution

The fourth proportional to 3,543.43, 5,315.75 and 1,078.49 is: 1,617.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.43 : 5,315.75 = 1,078.49 : x
  2. Step 2: Convert to fraction form
    3,543.43/5,315.75 = 1,078.49/x
  3. Step 3: Cross multiply
    3,543.43x = 5,315.75 × 1,078.49
  4. Step 4: Simplify right side
    3,543.43x = 5,732,991.11
  5. Step 5: Solve for x
    x = 5,732,991.11/3,543.43
  6. Step 6: Final answer
    x = 1,617.92

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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.