Home / 7,620.33-11,415.70-5,615.38

Finding the Fourth Proportional to 7,620.33, 11,415.70 and 5,615.38

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Solution

The fourth proportional to 7,620.33, 11,415.70 and 5,615.38 is: 8,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.33 : 11,415.70 = 5,615.38 : x
  2. Step 2: Convert to fraction form
    7,620.33/11,415.70 = 5,615.38/x
  3. Step 3: Cross multiply
    7,620.33x = 11,415.70 × 5,615.38
  4. Step 4: Simplify right side
    7,620.33x = 64,103,490.80
  5. Step 5: Solve for x
    x = 64,103,490.80/7,620.33
  6. Step 6: Final answer
    x = 8,412.17

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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.