Home / 7,619.84-11,431.20-3,460.15

Finding the Fourth Proportional to 7,619.84, 11,431.20 and 3,460.15

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Solution

The fourth proportional to 7,619.84, 11,431.20 and 3,460.15 is: 5,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.84 : 11,431.20 = 3,460.15 : x
  2. Step 2: Convert to fraction form
    7,619.84/11,431.20 = 3,460.15/x
  3. Step 3: Cross multiply
    7,619.84x = 11,431.20 × 3,460.15
  4. Step 4: Simplify right side
    7,619.84x = 39,553,666.68
  5. Step 5: Solve for x
    x = 39,553,666.68/7,619.84
  6. Step 6: Final answer
    x = 5,190.88

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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.