Home / 2,824.21-3,894.95-2,117.65

Finding the Fourth Proportional to 2,824.21, 3,894.95 and 2,117.65

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Solution

The fourth proportional to 2,824.21, 3,894.95 and 2,117.65 is: 2,920.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.21 : 3,894.95 = 2,117.65 : x
  2. Step 2: Convert to fraction form
    2,824.21/3,894.95 = 2,117.65/x
  3. Step 3: Cross multiply
    2,824.21x = 3,894.95 × 2,117.65
  4. Step 4: Simplify right side
    2,824.21x = 8,248,110.80
  5. Step 5: Solve for x
    x = 8,248,110.80/2,824.21
  6. Step 6: Final answer
    x = 2,920.51

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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.