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Finding the Fourth Proportional to 7,230.43, 9,977.50 and 4,086.41

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Solution

The fourth proportional to 7,230.43, 9,977.50 and 4,086.41 is: 5,638.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.43 : 9,977.50 = 4,086.41 : x
  2. Step 2: Convert to fraction form
    7,230.43/9,977.50 = 4,086.41/x
  3. Step 3: Cross multiply
    7,230.43x = 9,977.50 × 4,086.41
  4. Step 4: Simplify right side
    7,230.43x = 40,772,155.78
  5. Step 5: Solve for x
    x = 40,772,155.78/7,230.43
  6. Step 6: Final answer
    x = 5,638.97

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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.