Home / 3,139.75-4,332.99-1,742.50

Finding the Fourth Proportional to 3,139.75, 4,332.99 and 1,742.50

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Solution

The fourth proportional to 3,139.75, 4,332.99 and 1,742.50 is: 2,404.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.75 : 4,332.99 = 1,742.50 : x
  2. Step 2: Convert to fraction form
    3,139.75/4,332.99 = 1,742.50/x
  3. Step 3: Cross multiply
    3,139.75x = 4,332.99 × 1,742.50
  4. Step 4: Simplify right side
    3,139.75x = 7,550,235.08
  5. Step 5: Solve for x
    x = 7,550,235.08/3,139.75
  6. Step 6: Final answer
    x = 2,404.72

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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.