Home / 7,909.36-11,850-4,619.68

Finding the Fourth Proportional to 7,909.36, 11,850 and 4,619.68

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Solution

The fourth proportional to 7,909.36, 11,850 and 4,619.68 is: 6,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.36 : 11,850 = 4,619.68 : x
  2. Step 2: Convert to fraction form
    7,909.36/11,850 = 4,619.68/x
  3. Step 3: Cross multiply
    7,909.36x = 11,850 × 4,619.68
  4. Step 4: Simplify right side
    7,909.36x = 54,743,208
  5. Step 5: Solve for x
    x = 54,743,208/7,909.36
  6. Step 6: Final answer
    x = 6,921.32

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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.