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Finding the Fourth Proportional to 7,825.70, 10,799.88 and 4,289.06

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Solution

The fourth proportional to 7,825.70, 10,799.88 and 4,289.06 is: 5,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,825.70 : 10,799.88 = 4,289.06 : x
  2. Step 2: Convert to fraction form
    7,825.70/10,799.88 = 4,289.06/x
  3. Step 3: Cross multiply
    7,825.70x = 10,799.88 × 4,289.06
  4. Step 4: Simplify right side
    7,825.70x = 46,321,333.31
  5. Step 5: Solve for x
    x = 46,321,333.31/7,825.70
  6. Step 6: Final answer
    x = 5,919.13

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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.