Home / 7,124.13-10,686.33-1,929.87

Finding the Fourth Proportional to 7,124.13, 10,686.33 and 1,929.87

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Solution

The fourth proportional to 7,124.13, 10,686.33 and 1,929.87 is: 2,894.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.13 : 10,686.33 = 1,929.87 : x
  2. Step 2: Convert to fraction form
    7,124.13/10,686.33 = 1,929.87/x
  3. Step 3: Cross multiply
    7,124.13x = 10,686.33 × 1,929.87
  4. Step 4: Simplify right side
    7,124.13x = 20,623,227.68
  5. Step 5: Solve for x
    x = 20,623,227.68/7,124.13
  6. Step 6: Final answer
    x = 2,894.84

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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.