Home / 3,139.85-4,332.93-1,723.56

Finding the Fourth Proportional to 3,139.85, 4,332.93 and 1,723.56

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Solution

The fourth proportional to 3,139.85, 4,332.93 and 1,723.56 is: 2,378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.85 : 4,332.93 = 1,723.56 : x
  2. Step 2: Convert to fraction form
    3,139.85/4,332.93 = 1,723.56/x
  3. Step 3: Cross multiply
    3,139.85x = 4,332.93 × 1,723.56
  4. Step 4: Simplify right side
    3,139.85x = 7,468,064.83
  5. Step 5: Solve for x
    x = 7,468,064.83/3,139.85
  6. Step 6: Final answer
    x = 2,378.48

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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.