Home / 7,125.42-10,686.99-1,930.14

Finding the Fourth Proportional to 7,125.42, 10,686.99 and 1,930.14

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Solution

The fourth proportional to 7,125.42, 10,686.99 and 1,930.14 is: 2,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.42 : 10,686.99 = 1,930.14 : x
  2. Step 2: Convert to fraction form
    7,125.42/10,686.99 = 1,930.14/x
  3. Step 3: Cross multiply
    7,125.42x = 10,686.99 × 1,930.14
  4. Step 4: Simplify right side
    7,125.42x = 20,627,386.88
  5. Step 5: Solve for x
    x = 20,627,386.88/7,125.42
  6. Step 6: Final answer
    x = 2,894.90

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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.