Home / 3,120.66-4,306.50-1,723.42

Finding the Fourth Proportional to 3,120.66, 4,306.50 and 1,723.42

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Solution

The fourth proportional to 3,120.66, 4,306.50 and 1,723.42 is: 2,378.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.66 : 4,306.50 = 1,723.42 : x
  2. Step 2: Convert to fraction form
    3,120.66/4,306.50 = 1,723.42/x
  3. Step 3: Cross multiply
    3,120.66x = 4,306.50 × 1,723.42
  4. Step 4: Simplify right side
    3,120.66x = 7,421,908.23
  5. Step 5: Solve for x
    x = 7,421,908.23/3,120.66
  6. Step 6: Final answer
    x = 2,378.31

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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.