Home / 7,411.77-11,115.39-3,899.84

Finding the Fourth Proportional to 7,411.77, 11,115.39 and 3,899.84

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Solution

The fourth proportional to 7,411.77, 11,115.39 and 3,899.84 is: 5,848.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,411.77 : 11,115.39 = 3,899.84 : x
  2. Step 2: Convert to fraction form
    7,411.77/11,115.39 = 3,899.84/x
  3. Step 3: Cross multiply
    7,411.77x = 11,115.39 × 3,899.84
  4. Step 4: Simplify right side
    7,411.77x = 43,348,186.96
  5. Step 5: Solve for x
    x = 43,348,186.96/7,411.77
  6. Step 6: Final answer
    x = 5,848.56

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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.