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Finding the Fourth Proportional to 4,859.28, 7,288.92 and 3,891.48

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Solution

The fourth proportional to 4,859.28, 7,288.92 and 3,891.48 is: 5,837.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,859.28 : 7,288.92 = 3,891.48 : x
  2. Step 2: Convert to fraction form
    4,859.28/7,288.92 = 3,891.48/x
  3. Step 3: Cross multiply
    4,859.28x = 7,288.92 × 3,891.48
  4. Step 4: Simplify right side
    4,859.28x = 28,364,686.40
  5. Step 5: Solve for x
    x = 28,364,686.40/4,859.28
  6. Step 6: Final answer
    x = 5,837.22

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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.