Home / 7,127.76-9,836.34-3,941.28

Finding the Fourth Proportional to 7,127.76, 9,836.34 and 3,941.28

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Solution

The fourth proportional to 7,127.76, 9,836.34 and 3,941.28 is: 5,438.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.76 : 9,836.34 = 3,941.28 : x
  2. Step 2: Convert to fraction form
    7,127.76/9,836.34 = 3,941.28/x
  3. Step 3: Cross multiply
    7,127.76x = 9,836.34 × 3,941.28
  4. Step 4: Simplify right side
    7,127.76x = 38,767,770.12
  5. Step 5: Solve for x
    x = 38,767,770.12/7,127.76
  6. Step 6: Final answer
    x = 5,438.98

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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.