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Finding the Fourth Proportional to 6,720.80, 9,275.04 and 3,736.69

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Solution

The fourth proportional to 6,720.80, 9,275.04 and 3,736.69 is: 5,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.80 : 9,275.04 = 3,736.69 : x
  2. Step 2: Convert to fraction form
    6,720.80/9,275.04 = 3,736.69/x
  3. Step 3: Cross multiply
    6,720.80x = 9,275.04 × 3,736.69
  4. Step 4: Simplify right side
    6,720.80x = 34,657,926.03
  5. Step 5: Solve for x
    x = 34,657,926.03/6,720.80
  6. Step 6: Final answer
    x = 5,156.82

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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.