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Finding the Fourth Proportional to 6,858.05, 10,287.47 and 1,928.07

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Solution

The fourth proportional to 6,858.05, 10,287.47 and 1,928.07 is: 2,892.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,858.05 : 10,287.47 = 1,928.07 : x
  2. Step 2: Convert to fraction form
    6,858.05/10,287.47 = 1,928.07/x
  3. Step 3: Cross multiply
    6,858.05x = 10,287.47 × 1,928.07
  4. Step 4: Simplify right side
    6,858.05x = 19,834,952.64
  5. Step 5: Solve for x
    x = 19,834,952.64/6,858.05
  6. Step 6: Final answer
    x = 2,892.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.