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Finding the Fourth Proportional to 7,390.88, 10,199.44 and 4,203.80

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Solution

The fourth proportional to 7,390.88, 10,199.44 and 4,203.80 is: 5,801.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.88 : 10,199.44 = 4,203.80 : x
  2. Step 2: Convert to fraction form
    7,390.88/10,199.44 = 4,203.80/x
  3. Step 3: Cross multiply
    7,390.88x = 10,199.44 × 4,203.80
  4. Step 4: Simplify right side
    7,390.88x = 42,876,405.87
  5. Step 5: Solve for x
    x = 42,876,405.87/7,390.88
  6. Step 6: Final answer
    x = 5,801.26

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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.