Home / 5,163.20-7,125.26-2,805.35

Finding the Fourth Proportional to 5,163.20, 7,125.26 and 2,805.35

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Solution

The fourth proportional to 5,163.20, 7,125.26 and 2,805.35 is: 3,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.20 : 7,125.26 = 2,805.35 : x
  2. Step 2: Convert to fraction form
    5,163.20/7,125.26 = 2,805.35/x
  3. Step 3: Cross multiply
    5,163.20x = 7,125.26 × 2,805.35
  4. Step 4: Simplify right side
    5,163.20x = 19,988,834.11
  5. Step 5: Solve for x
    x = 19,988,834.11/5,163.20
  6. Step 6: Final answer
    x = 3,871.40

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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.