Home / 7,890.28-11,834.86-2,696.20

Finding the Fourth Proportional to 7,890.28, 11,834.86 and 2,696.20

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Solution

The fourth proportional to 7,890.28, 11,834.86 and 2,696.20 is: 4,044.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.28 : 11,834.86 = 2,696.20 : x
  2. Step 2: Convert to fraction form
    7,890.28/11,834.86 = 2,696.20/x
  3. Step 3: Cross multiply
    7,890.28x = 11,834.86 × 2,696.20
  4. Step 4: Simplify right side
    7,890.28x = 31,909,149.53
  5. Step 5: Solve for x
    x = 31,909,149.53/7,890.28
  6. Step 6: Final answer
    x = 4,044.11

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1.5x scale

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.