Home / 7,116-9,819.84-4,131.66

Finding the Fourth Proportional to 7,116, 9,819.84 and 4,131.66

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Solution

The fourth proportional to 7,116, 9,819.84 and 4,131.66 is: 5,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116 : 9,819.84 = 4,131.66 : x
  2. Step 2: Convert to fraction form
    7,116/9,819.84 = 4,131.66/x
  3. Step 3: Cross multiply
    7,116x = 9,819.84 × 4,131.66
  4. Step 4: Simplify right side
    7,116x = 40,572,240.13
  5. Step 5: Solve for x
    x = 40,572,240.13/7,116
  6. Step 6: Final answer
    x = 5,701.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.