Home / 7,114.28-9,818.29-3,927.87

Finding the Fourth Proportional to 7,114.28, 9,818.29 and 3,927.87

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Solution

The fourth proportional to 7,114.28, 9,818.29 and 3,927.87 is: 5,420.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.28 : 9,818.29 = 3,927.87 : x
  2. Step 2: Convert to fraction form
    7,114.28/9,818.29 = 3,927.87/x
  3. Step 3: Cross multiply
    7,114.28x = 9,818.29 × 3,927.87
  4. Step 4: Simplify right side
    7,114.28x = 38,564,932.99
  5. Step 5: Solve for x
    x = 38,564,932.99/7,114.28
  6. Step 6: Final answer
    x = 5,420.78

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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.