Home / 3,139.72-4,332.81-1,723.52

Finding the Fourth Proportional to 3,139.72, 4,332.81 and 1,723.52

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Solution

The fourth proportional to 3,139.72, 4,332.81 and 1,723.52 is: 2,378.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.72 : 4,332.81 = 1,723.52 : x
  2. Step 2: Convert to fraction form
    3,139.72/4,332.81 = 1,723.52/x
  3. Step 3: Cross multiply
    3,139.72x = 4,332.81 × 1,723.52
  4. Step 4: Simplify right side
    3,139.72x = 7,467,701.99
  5. Step 5: Solve for x
    x = 7,467,701.99/3,139.72
  6. Step 6: Final answer
    x = 2,378.46

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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.