Home / 3,139.42-4,709.10-1,907.17

Finding the Fourth Proportional to 3,139.42, 4,709.10 and 1,907.17

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Solution

The fourth proportional to 3,139.42, 4,709.10 and 1,907.17 is: 2,860.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.42 : 4,709.10 = 1,907.17 : x
  2. Step 2: Convert to fraction form
    3,139.42/4,709.10 = 1,907.17/x
  3. Step 3: Cross multiply
    3,139.42x = 4,709.10 × 1,907.17
  4. Step 4: Simplify right side
    3,139.42x = 8,981,054.25
  5. Step 5: Solve for x
    x = 8,981,054.25/3,139.42
  6. Step 6: Final answer
    x = 2,860.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.