Home / 5,021.91-6,930-2,783.88

Finding the Fourth Proportional to 5,021.91, 6,930 and 2,783.88

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Solution

The fourth proportional to 5,021.91, 6,930 and 2,783.88 is: 3,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,021.91 : 6,930 = 2,783.88 : x
  2. Step 2: Convert to fraction form
    5,021.91/6,930 = 2,783.88/x
  3. Step 3: Cross multiply
    5,021.91x = 6,930 × 2,783.88
  4. Step 4: Simplify right side
    5,021.91x = 19,292,288.40
  5. Step 5: Solve for x
    x = 19,292,288.40/5,021.91
  6. Step 6: Final answer
    x = 3,841.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.