Home / 7,890.68-11,835.55-2,959.91

Finding the Fourth Proportional to 7,890.68, 11,835.55 and 2,959.91

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Solution

The fourth proportional to 7,890.68, 11,835.55 and 2,959.91 is: 4,439.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.68 : 11,835.55 = 2,959.91 : x
  2. Step 2: Convert to fraction form
    7,890.68/11,835.55 = 2,959.91/x
  3. Step 3: Cross multiply
    7,890.68x = 11,835.55 × 2,959.91
  4. Step 4: Simplify right side
    7,890.68x = 35,032,162.80
  5. Step 5: Solve for x
    x = 35,032,162.80/7,890.68
  6. Step 6: Final answer
    x = 4,439.69

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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.