Home / 6,638.49-9,160.65-3,805.86

Finding the Fourth Proportional to 6,638.49, 9,160.65 and 3,805.86

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Solution

The fourth proportional to 6,638.49, 9,160.65 and 3,805.86 is: 5,251.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.49 : 9,160.65 = 3,805.86 : x
  2. Step 2: Convert to fraction form
    6,638.49/9,160.65 = 3,805.86/x
  3. Step 3: Cross multiply
    6,638.49x = 9,160.65 × 3,805.86
  4. Step 4: Simplify right side
    6,638.49x = 34,864,151.41
  5. Step 5: Solve for x
    x = 34,864,151.41/6,638.49
  6. Step 6: Final answer
    x = 5,251.82

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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.