Home / 6,881.40-10,322.14-1,687.28

Finding the Fourth Proportional to 6,881.40, 10,322.14 and 1,687.28

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Solution

The fourth proportional to 6,881.40, 10,322.14 and 1,687.28 is: 2,530.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.40 : 10,322.14 = 1,687.28 : x
  2. Step 2: Convert to fraction form
    6,881.40/10,322.14 = 1,687.28/x
  3. Step 3: Cross multiply
    6,881.40x = 10,322.14 × 1,687.28
  4. Step 4: Simplify right side
    6,881.40x = 17,416,340.38
  5. Step 5: Solve for x
    x = 17,416,340.38/6,881.40
  6. Step 6: Final answer
    x = 2,530.93

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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.