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Finding the Fourth Proportional to 5,392.45, 7,422.87 and 4,648.87

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Solution

The fourth proportional to 5,392.45, 7,422.87 and 4,648.87 is: 6,399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,392.45 : 7,422.87 = 4,648.87 : x
  2. Step 2: Convert to fraction form
    5,392.45/7,422.87 = 4,648.87/x
  3. Step 3: Cross multiply
    5,392.45x = 7,422.87 × 4,648.87
  4. Step 4: Simplify right side
    5,392.45x = 34,507,957.66
  5. Step 5: Solve for x
    x = 34,507,957.66/5,392.45
  6. Step 6: Final answer
    x = 6,399.31

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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.