Home / 3,178.45-4,384.96-2,292.31

Finding the Fourth Proportional to 3,178.45, 4,384.96 and 2,292.31

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Solution

The fourth proportional to 3,178.45, 4,384.96 and 2,292.31 is: 3,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.45 : 4,384.96 = 2,292.31 : x
  2. Step 2: Convert to fraction form
    3,178.45/4,384.96 = 2,292.31/x
  3. Step 3: Cross multiply
    3,178.45x = 4,384.96 × 2,292.31
  4. Step 4: Simplify right side
    3,178.45x = 10,051,687.66
  5. Step 5: Solve for x
    x = 10,051,687.66/3,178.45
  6. Step 6: Final answer
    x = 3,162.45

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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.