Home / 5,186.79-7,154.64-3,169.28

Finding the Fourth Proportional to 5,186.79, 7,154.64 and 3,169.28

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Solution

The fourth proportional to 5,186.79, 7,154.64 and 3,169.28 is: 4,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.79 : 7,154.64 = 3,169.28 : x
  2. Step 2: Convert to fraction form
    5,186.79/7,154.64 = 3,169.28/x
  3. Step 3: Cross multiply
    5,186.79x = 7,154.64 × 3,169.28
  4. Step 4: Simplify right side
    5,186.79x = 22,675,075.35
  5. Step 5: Solve for x
    x = 22,675,075.35/5,186.79
  6. Step 6: Final answer
    x = 4,371.70

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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.