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Finding the Fourth Proportional to 7,500.88, 10,351.21 and 4,188.88

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Solution

The fourth proportional to 7,500.88, 10,351.21 and 4,188.88 is: 5,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,500.88 : 10,351.21 = 4,188.88 : x
  2. Step 2: Convert to fraction form
    7,500.88/10,351.21 = 4,188.88/x
  3. Step 3: Cross multiply
    7,500.88x = 10,351.21 × 4,188.88
  4. Step 4: Simplify right side
    7,500.88x = 43,359,924.79
  5. Step 5: Solve for x
    x = 43,359,924.79/7,500.88
  6. Step 6: Final answer
    x = 5,780.65

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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.