Home / 3,178.95-4,385.66-2,292.81

Finding the Fourth Proportional to 3,178.95, 4,385.66 and 2,292.81

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Solution

The fourth proportional to 3,178.95, 4,385.66 and 2,292.81 is: 3,163.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.95 : 4,385.66 = 2,292.81 : x
  2. Step 2: Convert to fraction form
    3,178.95/4,385.66 = 2,292.81/x
  3. Step 3: Cross multiply
    3,178.95x = 4,385.66 × 2,292.81
  4. Step 4: Simplify right side
    3,178.95x = 10,055,473.64
  5. Step 5: Solve for x
    x = 10,055,473.64/3,178.95
  6. Step 6: Final answer
    x = 3,163.14

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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.