Home / 1,296.63-1,948.68-1,078.61

Finding the Fourth Proportional to 1,296.63, 1,948.68 and 1,078.61

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Solution

The fourth proportional to 1,296.63, 1,948.68 and 1,078.61 is: 1,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.63 : 1,948.68 = 1,078.61 : x
  2. Step 2: Convert to fraction form
    1,296.63/1,948.68 = 1,078.61/x
  3. Step 3: Cross multiply
    1,296.63x = 1,948.68 × 1,078.61
  4. Step 4: Simplify right side
    1,296.63x = 2,101,855.99
  5. Step 5: Solve for x
    x = 2,101,855.99/1,296.63
  6. Step 6: Final answer
    x = 1,621.01

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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.