Home / 1,930.87-2,894.68-1,312.84

Finding the Fourth Proportional to 1,930.87, 2,894.68 and 1,312.84

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Solution

The fourth proportional to 1,930.87, 2,894.68 and 1,312.84 is: 1,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.87 : 2,894.68 = 1,312.84 : x
  2. Step 2: Convert to fraction form
    1,930.87/2,894.68 = 1,312.84/x
  3. Step 3: Cross multiply
    1,930.87x = 2,894.68 × 1,312.84
  4. Step 4: Simplify right side
    1,930.87x = 3,800,251.69
  5. Step 5: Solve for x
    x = 3,800,251.69/1,930.87
  6. Step 6: Final answer
    x = 1,968.16

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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.