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Finding the Fourth Proportional to 3,609.51, 4,981.95 and 2,117.49

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Solution

The fourth proportional to 3,609.51, 4,981.95 and 2,117.49 is: 2,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.51 : 4,981.95 = 2,117.49 : x
  2. Step 2: Convert to fraction form
    3,609.51/4,981.95 = 2,117.49/x
  3. Step 3: Cross multiply
    3,609.51x = 4,981.95 × 2,117.49
  4. Step 4: Simplify right side
    3,609.51x = 10,549,229.31
  5. Step 5: Solve for x
    x = 10,549,229.31/3,609.51
  6. Step 6: Final answer
    x = 2,922.62

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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.