Home / 7,890.80-11,836.20-5,946.80

Finding the Fourth Proportional to 7,890.80, 11,836.20 and 5,946.80

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Solution

The fourth proportional to 7,890.80, 11,836.20 and 5,946.80 is: 8,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.80 : 11,836.20 = 5,946.80 : x
  2. Step 2: Convert to fraction form
    7,890.80/11,836.20 = 5,946.80/x
  3. Step 3: Cross multiply
    7,890.80x = 11,836.20 × 5,946.80
  4. Step 4: Simplify right side
    7,890.80x = 70,387,514.16
  5. Step 5: Solve for x
    x = 70,387,514.16/7,890.80
  6. Step 6: Final answer
    x = 8,920.20

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Similar ratio
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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.