Home / 7,129.40-10,694.14-1,935.28

Finding the Fourth Proportional to 7,129.40, 10,694.14 and 1,935.28

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Solution

The fourth proportional to 7,129.40, 10,694.14 and 1,935.28 is: 2,902.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.40 : 10,694.14 = 1,935.28 : x
  2. Step 2: Convert to fraction form
    7,129.40/10,694.14 = 1,935.28/x
  3. Step 3: Cross multiply
    7,129.40x = 10,694.14 × 1,935.28
  4. Step 4: Simplify right side
    7,129.40x = 20,696,155.26
  5. Step 5: Solve for x
    x = 20,696,155.26/7,129.40
  6. Step 6: Final answer
    x = 2,902.93

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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.