Home / 2,869.14-3,956.41-2,124.55

Finding the Fourth Proportional to 2,869.14, 3,956.41 and 2,124.55

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Solution

The fourth proportional to 2,869.14, 3,956.41 and 2,124.55 is: 2,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.14 : 3,956.41 = 2,124.55 : x
  2. Step 2: Convert to fraction form
    2,869.14/3,956.41 = 2,124.55/x
  3. Step 3: Cross multiply
    2,869.14x = 3,956.41 × 2,124.55
  4. Step 4: Simplify right side
    2,869.14x = 8,405,590.87
  5. Step 5: Solve for x
    x = 8,405,590.87/2,869.14
  6. Step 6: Final answer
    x = 2,929.66

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1.5x scale

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.