Home / 6,721.78-9,276.45-4,069.86

Finding the Fourth Proportional to 6,721.78, 9,276.45 and 4,069.86

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Solution

The fourth proportional to 6,721.78, 9,276.45 and 4,069.86 is: 5,616.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.78 : 9,276.45 = 4,069.86 : x
  2. Step 2: Convert to fraction form
    6,721.78/9,276.45 = 4,069.86/x
  3. Step 3: Cross multiply
    6,721.78x = 9,276.45 × 4,069.86
  4. Step 4: Simplify right side
    6,721.78x = 37,753,852.80
  5. Step 5: Solve for x
    x = 37,753,852.80/6,721.78
  6. Step 6: Final answer
    x = 5,616.65

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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.