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Finding the Fourth Proportional to 7,188.89, 10,780.24 and 2,507.50

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Solution

The fourth proportional to 7,188.89, 10,780.24 and 2,507.50 is: 3,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.89 : 10,780.24 = 2,507.50 : x
  2. Step 2: Convert to fraction form
    7,188.89/10,780.24 = 2,507.50/x
  3. Step 3: Cross multiply
    7,188.89x = 10,780.24 × 2,507.50
  4. Step 4: Simplify right side
    7,188.89x = 27,031,451.80
  5. Step 5: Solve for x
    x = 27,031,451.80/7,188.89
  6. Step 6: Final answer
    x = 3,760.17

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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.