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Finding the Fourth Proportional to 6,891.30, 9,495.90 and 5,700.60

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Solution

The fourth proportional to 6,891.30, 9,495.90 and 5,700.60 is: 7,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.30 : 9,495.90 = 5,700.60 : x
  2. Step 2: Convert to fraction form
    6,891.30/9,495.90 = 5,700.60/x
  3. Step 3: Cross multiply
    6,891.30x = 9,495.90 × 5,700.60
  4. Step 4: Simplify right side
    6,891.30x = 54,132,327.54
  5. Step 5: Solve for x
    x = 54,132,327.54/6,891.30
  6. Step 6: Final answer
    x = 7,855.17

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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.